rustpython-ruff_python_parser 0.15.8

---
source: crates/ruff_python_parser/tests/fixtures.rs
input_file: crates/ruff_python_parser/resources/inline/err/rebound_comprehension_variable.py
---
## AST

```
Module(
    ModModule {
        node_index: NodeIndex(None),
        range: 0..342,
        body: [
            Expr(
                StmtExpr {
                    node_index: NodeIndex(None),
                    range: 0..28,
                    value: ListComp(
                        ExprListComp {
                            node_index: NodeIndex(None),
                            range: 0..28,
                            elt: Named(
                                ExprNamed {
                                    node_index: NodeIndex(None),
                                    range: 2..8,
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 2..3,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    value: NumberLiteral(
                                        ExprNumberLiteral {
                                            node_index: NodeIndex(None),
                                            range: 7..8,
                                            value: Int(
                                                0,
                                            ),
                                        },
                                    ),
                                },
                            ),
                            generators: [
                                Comprehension {
                                    range: 10..27,
                                    node_index: NodeIndex(None),
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 14..15,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    iter: Call(
                                        ExprCall {
                                            node_index: NodeIndex(None),
                                            range: 19..27,
                                            func: Name(
                                                ExprName {
                                                    node_index: NodeIndex(None),
                                                    range: 19..24,
                                                    id: Name("range"),
                                                    ctx: Load,
                                                },
                                            ),
                                            arguments: Arguments {
                                                range: 24..27,
                                                node_index: NodeIndex(None),
                                                args: [
                                                    NumberLiteral(
                                                        ExprNumberLiteral {
                                                            node_index: NodeIndex(None),
                                                            range: 25..26,
                                                            value: Int(
                                                                0,
                                                            ),
                                                        },
                                                    ),
                                                ],
                                                keywords: [],
                                            },
                                        },
                                    ),
                                    ifs: [],
                                    is_async: false,
                                },
                            ],
                        },
                    ),
                },
            ),
            Expr(
                StmtExpr {
                    node_index: NodeIndex(None),
                    range: 29..57,
                    value: SetComp(
                        ExprSetComp {
                            node_index: NodeIndex(None),
                            range: 29..57,
                            elt: Named(
                                ExprNamed {
                                    node_index: NodeIndex(None),
                                    range: 31..37,
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 31..32,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    value: NumberLiteral(
                                        ExprNumberLiteral {
                                            node_index: NodeIndex(None),
                                            range: 36..37,
                                            value: Int(
                                                0,
                                            ),
                                        },
                                    ),
                                },
                            ),
                            generators: [
                                Comprehension {
                                    range: 39..56,
                                    node_index: NodeIndex(None),
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 43..44,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    iter: Call(
                                        ExprCall {
                                            node_index: NodeIndex(None),
                                            range: 48..56,
                                            func: Name(
                                                ExprName {
                                                    node_index: NodeIndex(None),
                                                    range: 48..53,
                                                    id: Name("range"),
                                                    ctx: Load,
                                                },
                                            ),
                                            arguments: Arguments {
                                                range: 53..56,
                                                node_index: NodeIndex(None),
                                                args: [
                                                    NumberLiteral(
                                                        ExprNumberLiteral {
                                                            node_index: NodeIndex(None),
                                                            range: 54..55,
                                                            value: Int(
                                                                0,
                                                            ),
                                                        },
                                                    ),
                                                ],
                                                keywords: [],
                                            },
                                        },
                                    ),
                                    ifs: [],
                                    is_async: false,
                                },
                            ],
                        },
                    ),
                },
            ),
            Expr(
                StmtExpr {
                    node_index: NodeIndex(None),
                    range: 58..91,
                    value: DictComp(
                        ExprDictComp {
                            node_index: NodeIndex(None),
                            range: 58..91,
                            key: Named(
                                ExprNamed {
                                    node_index: NodeIndex(None),
                                    range: 60..66,
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 60..61,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    value: NumberLiteral(
                                        ExprNumberLiteral {
                                            node_index: NodeIndex(None),
                                            range: 65..66,
                                            value: Int(
                                                0,
                                            ),
                                        },
                                    ),
                                },
                            ),
                            value: Name(
                                ExprName {
                                    node_index: NodeIndex(None),
                                    range: 69..72,
                                    id: Name("val"),
                                    ctx: Load,
                                },
                            ),
                            generators: [
                                Comprehension {
                                    range: 73..90,
                                    node_index: NodeIndex(None),
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 77..78,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    iter: Call(
                                        ExprCall {
                                            node_index: NodeIndex(None),
                                            range: 82..90,
                                            func: Name(
                                                ExprName {
                                                    node_index: NodeIndex(None),
                                                    range: 82..87,
                                                    id: Name("range"),
                                                    ctx: Load,
                                                },
                                            ),
                                            arguments: Arguments {
                                                range: 87..90,
                                                node_index: NodeIndex(None),
                                                args: [
                                                    NumberLiteral(
                                                        ExprNumberLiteral {
                                                            node_index: NodeIndex(None),
                                                            range: 88..89,
                                                            value: Int(
                                                                0,
                                                            ),
                                                        },
                                                    ),
                                                ],
                                                keywords: [],
                                            },
                                        },
                                    ),
                                    ifs: [],
                                    is_async: false,
                                },
                            ],
                        },
                    ),
                },
            ),
            Expr(
                StmtExpr {
                    node_index: NodeIndex(None),
                    range: 92..125,
                    value: DictComp(
                        ExprDictComp {
                            node_index: NodeIndex(None),
                            range: 92..125,
                            key: Name(
                                ExprName {
                                    node_index: NodeIndex(None),
                                    range: 93..96,
                                    id: Name("key"),
                                    ctx: Load,
                                },
                            ),
                            value: Named(
                                ExprNamed {
                                    node_index: NodeIndex(None),
                                    range: 99..105,
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 99..100,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    value: NumberLiteral(
                                        ExprNumberLiteral {
                                            node_index: NodeIndex(None),
                                            range: 104..105,
                                            value: Int(
                                                0,
                                            ),
                                        },
                                    ),
                                },
                            ),
                            generators: [
                                Comprehension {
                                    range: 107..124,
                                    node_index: NodeIndex(None),
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 111..112,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    iter: Call(
                                        ExprCall {
                                            node_index: NodeIndex(None),
                                            range: 116..124,
                                            func: Name(
                                                ExprName {
                                                    node_index: NodeIndex(None),
                                                    range: 116..121,
                                                    id: Name("range"),
                                                    ctx: Load,
                                                },
                                            ),
                                            arguments: Arguments {
                                                range: 121..124,
                                                node_index: NodeIndex(None),
                                                args: [
                                                    NumberLiteral(
                                                        ExprNumberLiteral {
                                                            node_index: NodeIndex(None),
                                                            range: 122..123,
                                                            value: Int(
                                                                0,
                                                            ),
                                                        },
                                                    ),
                                                ],
                                                keywords: [],
                                            },
                                        },
                                    ),
                                    ifs: [],
                                    is_async: false,
                                },
                            ],
                        },
                    ),
                },
            ),
            Expr(
                StmtExpr {
                    node_index: NodeIndex(None),
                    range: 126..154,
                    value: Generator(
                        ExprGenerator {
                            node_index: NodeIndex(None),
                            range: 126..154,
                            elt: Named(
                                ExprNamed {
                                    node_index: NodeIndex(None),
                                    range: 128..134,
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 128..129,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    value: NumberLiteral(
                                        ExprNumberLiteral {
                                            node_index: NodeIndex(None),
                                            range: 133..134,
                                            value: Int(
                                                0,
                                            ),
                                        },
                                    ),
                                },
                            ),
                            generators: [
                                Comprehension {
                                    range: 136..153,
                                    node_index: NodeIndex(None),
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 140..141,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    iter: Call(
                                        ExprCall {
                                            node_index: NodeIndex(None),
                                            range: 145..153,
                                            func: Name(
                                                ExprName {
                                                    node_index: NodeIndex(None),
                                                    range: 145..150,
                                                    id: Name("range"),
                                                    ctx: Load,
                                                },
                                            ),
                                            arguments: Arguments {
                                                range: 150..153,
                                                node_index: NodeIndex(None),
                                                args: [
                                                    NumberLiteral(
                                                        ExprNumberLiteral {
                                                            node_index: NodeIndex(None),
                                                            range: 151..152,
                                                            value: Int(
                                                                0,
                                                            ),
                                                        },
                                                    ),
                                                ],
                                                keywords: [],
                                            },
                                        },
                                    ),
                                    ifs: [],
                                    is_async: false,
                                },
                            ],
                            parenthesized: true,
                        },
                    ),
                },
            ),
            Expr(
                StmtExpr {
                    node_index: NodeIndex(None),
                    range: 155..185,
                    value: ListComp(
                        ExprListComp {
                            node_index: NodeIndex(None),
                            range: 155..185,
                            elt: List(
                                ExprList {
                                    node_index: NodeIndex(None),
                                    range: 156..166,
                                    elts: [
                                        Named(
                                            ExprNamed {
                                                node_index: NodeIndex(None),
                                                range: 158..164,
                                                target: Name(
                                                    ExprName {
                                                        node_index: NodeIndex(None),
                                                        range: 158..159,
                                                        id: Name("a"),
                                                        ctx: Store,
                                                    },
                                                ),
                                                value: NumberLiteral(
                                                    ExprNumberLiteral {
                                                        node_index: NodeIndex(None),
                                                        range: 163..164,
                                                        value: Int(
                                                            0,
                                                        ),
                                                    },
                                                ),
                                            },
                                        ),
                                    ],
                                    ctx: Load,
                                },
                            ),
                            generators: [
                                Comprehension {
                                    range: 167..184,
                                    node_index: NodeIndex(None),
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 171..172,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    iter: Call(
                                        ExprCall {
                                            node_index: NodeIndex(None),
                                            range: 176..184,
                                            func: Name(
                                                ExprName {
                                                    node_index: NodeIndex(None),
                                                    range: 176..181,
                                                    id: Name("range"),
                                                    ctx: Load,
                                                },
                                            ),
                                            arguments: Arguments {
                                                range: 181..184,
                                                node_index: NodeIndex(None),
                                                args: [
                                                    NumberLiteral(
                                                        ExprNumberLiteral {
                                                            node_index: NodeIndex(None),
                                                            range: 182..183,
                                                            value: Int(
                                                                0,
                                                            ),
                                                        },
                                                    ),
                                                ],
                                                keywords: [],
                                            },
                                        },
                                    ),
                                    ifs: [],
                                    is_async: false,
                                },
                            ],
                        },
                    ),
                },
            ),
            Expr(
                StmtExpr {
                    node_index: NodeIndex(None),
                    range: 186..233,
                    value: ListComp(
                        ExprListComp {
                            node_index: NodeIndex(None),
                            range: 186..233,
                            elt: Named(
                                ExprNamed {
                                    node_index: NodeIndex(None),
                                    range: 188..194,
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 188..189,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    value: NumberLiteral(
                                        ExprNumberLiteral {
                                            node_index: NodeIndex(None),
                                            range: 193..194,
                                            value: Int(
                                                0,
                                            ),
                                        },
                                    ),
                                },
                            ),
                            generators: [
                                Comprehension {
                                    range: 196..214,
                                    node_index: NodeIndex(None),
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 200..201,
                                            id: Name("b"),
                                            ctx: Store,
                                        },
                                    ),
                                    iter: Call(
                                        ExprCall {
                                            node_index: NodeIndex(None),
                                            range: 205..214,
                                            func: Name(
                                                ExprName {
                                                    node_index: NodeIndex(None),
                                                    range: 205..210,
                                                    id: Name("range"),
                                                    ctx: Load,
                                                },
                                            ),
                                            arguments: Arguments {
                                                range: 211..214,
                                                node_index: NodeIndex(None),
                                                args: [
                                                    NumberLiteral(
                                                        ExprNumberLiteral {
                                                            node_index: NodeIndex(None),
                                                            range: 212..213,
                                                            value: Int(
                                                                0,
                                                            ),
                                                        },
                                                    ),
                                                ],
                                                keywords: [],
                                            },
                                        },
                                    ),
                                    ifs: [],
                                    is_async: false,
                                },
                                Comprehension {
                                    range: 215..232,
                                    node_index: NodeIndex(None),
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 219..220,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    iter: Call(
                                        ExprCall {
                                            node_index: NodeIndex(None),
                                            range: 224..232,
                                            func: Name(
                                                ExprName {
                                                    node_index: NodeIndex(None),
                                                    range: 224..229,
                                                    id: Name("range"),
                                                    ctx: Load,
                                                },
                                            ),
                                            arguments: Arguments {
                                                range: 229..232,
                                                node_index: NodeIndex(None),
                                                args: [
                                                    NumberLiteral(
                                                        ExprNumberLiteral {
                                                            node_index: NodeIndex(None),
                                                            range: 230..231,
                                                            value: Int(
                                                                0,
                                                            ),
                                                        },
                                                    ),
                                                ],
                                                keywords: [],
                                            },
                                        },
                                    ),
                                    ifs: [],
                                    is_async: false,
                                },
                            ],
                        },
                    ),
                },
            ),
            Expr(
                StmtExpr {
                    node_index: NodeIndex(None),
                    range: 234..281,
                    value: ListComp(
                        ExprListComp {
                            node_index: NodeIndex(None),
                            range: 234..281,
                            elt: Named(
                                ExprNamed {
                                    node_index: NodeIndex(None),
                                    range: 236..242,
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 236..237,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    value: NumberLiteral(
                                        ExprNumberLiteral {
                                            node_index: NodeIndex(None),
                                            range: 241..242,
                                            value: Int(
                                                0,
                                            ),
                                        },
                                    ),
                                },
                            ),
                            generators: [
                                Comprehension {
                                    range: 244..262,
                                    node_index: NodeIndex(None),
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 248..249,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    iter: Call(
                                        ExprCall {
                                            node_index: NodeIndex(None),
                                            range: 253..262,
                                            func: Name(
                                                ExprName {
                                                    node_index: NodeIndex(None),
                                                    range: 253..258,
                                                    id: Name("range"),
                                                    ctx: Load,
                                                },
                                            ),
                                            arguments: Arguments {
                                                range: 259..262,
                                                node_index: NodeIndex(None),
                                                args: [
                                                    NumberLiteral(
                                                        ExprNumberLiteral {
                                                            node_index: NodeIndex(None),
                                                            range: 260..261,
                                                            value: Int(
                                                                0,
                                                            ),
                                                        },
                                                    ),
                                                ],
                                                keywords: [],
                                            },
                                        },
                                    ),
                                    ifs: [],
                                    is_async: false,
                                },
                                Comprehension {
                                    range: 263..280,
                                    node_index: NodeIndex(None),
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 267..268,
                                            id: Name("b"),
                                            ctx: Store,
                                        },
                                    ),
                                    iter: Call(
                                        ExprCall {
                                            node_index: NodeIndex(None),
                                            range: 272..280,
                                            func: Name(
                                                ExprName {
                                                    node_index: NodeIndex(None),
                                                    range: 272..277,
                                                    id: Name("range"),
                                                    ctx: Load,
                                                },
                                            ),
                                            arguments: Arguments {
                                                range: 277..280,
                                                node_index: NodeIndex(None),
                                                args: [
                                                    NumberLiteral(
                                                        ExprNumberLiteral {
                                                            node_index: NodeIndex(None),
                                                            range: 278..279,
                                                            value: Int(
                                                                0,
                                                            ),
                                                        },
                                                    ),
                                                ],
                                                keywords: [],
                                            },
                                        },
                                    ),
                                    ifs: [],
                                    is_async: false,
                                },
                            ],
                        },
                    ),
                },
            ),
            Expr(
                StmtExpr {
                    node_index: NodeIndex(None),
                    range: 282..341,
                    value: ListComp(
                        ExprListComp {
                            node_index: NodeIndex(None),
                            range: 282..341,
                            elt: Tuple(
                                ExprTuple {
                                    node_index: NodeIndex(None),
                                    range: 283..303,
                                    elts: [
                                        Named(
                                            ExprNamed {
                                                node_index: NodeIndex(None),
                                                range: 285..291,
                                                target: Name(
                                                    ExprName {
                                                        node_index: NodeIndex(None),
                                                        range: 285..286,
                                                        id: Name("a"),
                                                        ctx: Store,
                                                    },
                                                ),
                                                value: NumberLiteral(
                                                    ExprNumberLiteral {
                                                        node_index: NodeIndex(None),
                                                        range: 290..291,
                                                        value: Int(
                                                            0,
                                                        ),
                                                    },
                                                ),
                                            },
                                        ),
                                        Named(
                                            ExprNamed {
                                                node_index: NodeIndex(None),
                                                range: 295..301,
                                                target: Name(
                                                    ExprName {
                                                        node_index: NodeIndex(None),
                                                        range: 295..296,
                                                        id: Name("b"),
                                                        ctx: Store,
                                                    },
                                                ),
                                                value: NumberLiteral(
                                                    ExprNumberLiteral {
                                                        node_index: NodeIndex(None),
                                                        range: 300..301,
                                                        value: Int(
                                                            1,
                                                        ),
                                                    },
                                                ),
                                            },
                                        ),
                                    ],
                                    ctx: Load,
                                    parenthesized: true,
                                },
                            ),
                            generators: [
                                Comprehension {
                                    range: 304..322,
                                    node_index: NodeIndex(None),
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 308..309,
                                            id: Name("a"),
                                            ctx: Store,
                                        },
                                    ),
                                    iter: Call(
                                        ExprCall {
                                            node_index: NodeIndex(None),
                                            range: 313..322,
                                            func: Name(
                                                ExprName {
                                                    node_index: NodeIndex(None),
                                                    range: 313..318,
                                                    id: Name("range"),
                                                    ctx: Load,
                                                },
                                            ),
                                            arguments: Arguments {
                                                range: 319..322,
                                                node_index: NodeIndex(None),
                                                args: [
                                                    NumberLiteral(
                                                        ExprNumberLiteral {
                                                            node_index: NodeIndex(None),
                                                            range: 320..321,
                                                            value: Int(
                                                                0,
                                                            ),
                                                        },
                                                    ),
                                                ],
                                                keywords: [],
                                            },
                                        },
                                    ),
                                    ifs: [],
                                    is_async: false,
                                },
                                Comprehension {
                                    range: 323..340,
                                    node_index: NodeIndex(None),
                                    target: Name(
                                        ExprName {
                                            node_index: NodeIndex(None),
                                            range: 327..328,
                                            id: Name("b"),
                                            ctx: Store,
                                        },
                                    ),
                                    iter: Call(
                                        ExprCall {
                                            node_index: NodeIndex(None),
                                            range: 332..340,
                                            func: Name(
                                                ExprName {
                                                    node_index: NodeIndex(None),
                                                    range: 332..337,
                                                    id: Name("range"),
                                                    ctx: Load,
                                                },
                                            ),
                                            arguments: Arguments {
                                                range: 337..340,
                                                node_index: NodeIndex(None),
                                                args: [
                                                    NumberLiteral(
                                                        ExprNumberLiteral {
                                                            node_index: NodeIndex(None),
                                                            range: 338..339,
                                                            value: Int(
                                                                0,
                                                            ),
                                                        },
                                                    ),
                                                ],
                                                keywords: [],
                                            },
                                        },
                                    ),
                                    ifs: [],
                                    is_async: false,
                                },
                            ],
                        },
                    ),
                },
            ),
        ],
    },
)
```
## Semantic Syntax Errors

  |
1 | [(a := 0) for a in range(0)]
  |   ^ Syntax Error: assignment expression cannot rebind comprehension variable
2 | {(a := 0) for a in range(0)}
3 | {(a := 0): val for a in range(0)}
  |


  |
1 | [(a := 0) for a in range(0)]
2 | {(a := 0) for a in range(0)}
  |   ^ Syntax Error: assignment expression cannot rebind comprehension variable
3 | {(a := 0): val for a in range(0)}
4 | {key: (a := 0) for a in range(0)}
  |


  |
1 | [(a := 0) for a in range(0)]
2 | {(a := 0) for a in range(0)}
3 | {(a := 0): val for a in range(0)}
  |   ^ Syntax Error: assignment expression cannot rebind comprehension variable
4 | {key: (a := 0) for a in range(0)}
5 | ((a := 0) for a in range(0))
  |


  |
2 | {(a := 0) for a in range(0)}
3 | {(a := 0): val for a in range(0)}
4 | {key: (a := 0) for a in range(0)}
  |        ^ Syntax Error: assignment expression cannot rebind comprehension variable
5 | ((a := 0) for a in range(0))
6 | [[(a := 0)] for a in range(0)]
  |


  |
3 | {(a := 0): val for a in range(0)}
4 | {key: (a := 0) for a in range(0)}
5 | ((a := 0) for a in range(0))
  |   ^ Syntax Error: assignment expression cannot rebind comprehension variable
6 | [[(a := 0)] for a in range(0)]
7 | [(a := 0) for b in range (0) for a in range(0)]
  |


  |
4 | {key: (a := 0) for a in range(0)}
5 | ((a := 0) for a in range(0))
6 | [[(a := 0)] for a in range(0)]
  |    ^ Syntax Error: assignment expression cannot rebind comprehension variable
7 | [(a := 0) for b in range (0) for a in range(0)]
8 | [(a := 0) for a in range (0) for b in range(0)]
  |


  |
5 | ((a := 0) for a in range(0))
6 | [[(a := 0)] for a in range(0)]
7 | [(a := 0) for b in range (0) for a in range(0)]
  |   ^ Syntax Error: assignment expression cannot rebind comprehension variable
8 | [(a := 0) for a in range (0) for b in range(0)]
9 | [((a := 0), (b := 1)) for a in range (0) for b in range(0)]
  |


  |
6 | [[(a := 0)] for a in range(0)]
7 | [(a := 0) for b in range (0) for a in range(0)]
8 | [(a := 0) for a in range (0) for b in range(0)]
  |   ^ Syntax Error: assignment expression cannot rebind comprehension variable
9 | [((a := 0), (b := 1)) for a in range (0) for b in range(0)]
  |


  |
7 | [(a := 0) for b in range (0) for a in range(0)]
8 | [(a := 0) for a in range (0) for b in range(0)]
9 | [((a := 0), (b := 1)) for a in range (0) for b in range(0)]
  |    ^ Syntax Error: assignment expression cannot rebind comprehension variable
  |


  |
7 | [(a := 0) for b in range (0) for a in range(0)]
8 | [(a := 0) for a in range (0) for b in range(0)]
9 | [((a := 0), (b := 1)) for a in range (0) for b in range(0)]
  |              ^ Syntax Error: assignment expression cannot rebind comprehension variable
  |