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---
source: crates/ruff_python_parser/tests/fixtures.rs
input_file: crates/ruff_python_parser/resources/inline/err/params_parenthesized.py
---
## AST
```
Module(
ModModule {
node_index: NodeIndex(None),
range: 0..59,
body: [
FunctionDef(
StmtFunctionDef {
node_index: NodeIndex(None),
range: 0..17,
is_async: false,
decorator_list: [],
name: Identifier {
id: Name("foo"),
range: 4..7,
node_index: NodeIndex(None),
},
type_params: None,
parameters: Parameters {
range: 7..17,
node_index: NodeIndex(None),
posonlyargs: [],
args: [
ParameterWithDefault {
range: 8..9,
node_index: NodeIndex(None),
parameter: Parameter {
range: 8..9,
node_index: NodeIndex(None),
name: Identifier {
id: Name("a"),
range: 8..9,
node_index: NodeIndex(None),
},
annotation: None,
runtime_type_comment: None,
runtime_type_comment_bytes: None,
},
default: None,
},
ParameterWithDefault {
range: 12..13,
node_index: NodeIndex(None),
parameter: Parameter {
range: 12..13,
node_index: NodeIndex(None),
name: Identifier {
id: Name("b"),
range: 12..13,
node_index: NodeIndex(None),
},
annotation: None,
runtime_type_comment: None,
runtime_type_comment_bytes: None,
},
default: None,
},
ParameterWithDefault {
range: 15..16,
node_index: NodeIndex(None),
parameter: Parameter {
range: 15..16,
node_index: NodeIndex(None),
name: Identifier {
id: Name("c"),
range: 15..16,
node_index: NodeIndex(None),
},
annotation: None,
runtime_type_comment: None,
runtime_type_comment_bytes: None,
},
default: None,
},
],
vararg: None,
kwonlyargs: [],
kwarg: None,
runtime_defaults: None,
},
returns: None,
body: [],
runtime_decorator_list: None,
runtime_type_comment: None,
runtime_type_comment_bytes: None,
runtime_body: None,
},
),
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 20..23,
value: EllipsisLiteral(
ExprEllipsisLiteral {
node_index: NodeIndex(None),
range: 20..23,
},
),
},
),
FunctionDef(
StmtFunctionDef {
node_index: NodeIndex(None),
range: 24..35,
is_async: false,
decorator_list: [],
name: Identifier {
id: Name("foo"),
range: 28..31,
node_index: NodeIndex(None),
},
type_params: None,
parameters: Parameters {
range: 31..35,
node_index: NodeIndex(None),
posonlyargs: [],
args: [
ParameterWithDefault {
range: 33..34,
node_index: NodeIndex(None),
parameter: Parameter {
range: 33..34,
node_index: NodeIndex(None),
name: Identifier {
id: Name("a"),
range: 33..34,
node_index: NodeIndex(None),
},
annotation: None,
runtime_type_comment: None,
runtime_type_comment_bytes: None,
},
default: None,
},
],
vararg: None,
kwonlyargs: [],
kwarg: None,
runtime_defaults: None,
},
returns: None,
body: [],
runtime_decorator_list: None,
runtime_type_comment: None,
runtime_type_comment_bytes: None,
runtime_body: None,
},
),
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 38..41,
value: EllipsisLiteral(
ExprEllipsisLiteral {
node_index: NodeIndex(None),
range: 38..41,
},
),
},
),
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 42..58,
value: Lambda(
ExprLambda {
node_index: NodeIndex(None),
range: 42..58,
parameters: Some(
Parameters {
range: 49..53,
node_index: NodeIndex(None),
posonlyargs: [],
args: [
ParameterWithDefault {
range: 50..51,
node_index: NodeIndex(None),
parameter: Parameter {
range: 50..51,
node_index: NodeIndex(None),
name: Identifier {
id: Name("a"),
range: 50..51,
node_index: NodeIndex(None),
},
annotation: None,
runtime_type_comment: None,
runtime_type_comment_bytes: None,
},
default: None,
},
],
vararg: None,
kwonlyargs: [],
kwarg: None,
runtime_defaults: None,
},
),
body: EllipsisLiteral(
ExprEllipsisLiteral {
node_index: NodeIndex(None),
range: 55..58,
},
),
},
),
},
),
],
runtime_body: None,
},
)
```
## Errors
|
1 | def foo(a, (b, c)): ...
| ^^^^^^ Syntax Error: Function parameters cannot be parenthesized
2 | def foo((a)): ...
3 | lambda (a,): ...
|
|
1 | def foo(a, (b, c)): ...
| ^ Syntax Error: invalid syntax
2 | def foo((a)): ...
3 | lambda (a,): ...
|
|
1 | def foo(a, (b, c)): ...
| ^ Syntax Error: invalid syntax
2 | def foo((a)): ...
3 | lambda (a,): ...
|
|
1 | def foo(a, (b, c)): ...
| ^ Syntax Error: invalid syntax
2 | def foo((a)): ...
3 | lambda (a,): ...
|
|
1 | def foo(a, (b, c)): ...
2 | def foo((a)): ...
| ^^^ Syntax Error: Function parameters cannot be parenthesized
3 | lambda (a,): ...
|
|
1 | def foo(a, (b, c)): ...
2 | def foo((a)): ...
| ^ Syntax Error: invalid syntax
3 | lambda (a,): ...
|
|
1 | def foo(a, (b, c)): ...
2 | def foo((a)): ...
| ^ Syntax Error: invalid syntax
3 | lambda (a,): ...
|
|
1 | def foo(a, (b, c)): ...
2 | def foo((a)): ...
| ^ Syntax Error: invalid syntax
3 | lambda (a,): ...
|
|
1 | def foo(a, (b, c)): ...
2 | def foo((a)): ...
3 | lambda (a,): ...
| ^^^^ Syntax Error: Lambda expression parameters cannot be parenthesized
|
1 | def foo(a, (b, c)): ...
2 | def foo((a)): ...
3 | lambda (a,): ...
| ^ Syntax Error: invalid syntax
|
1 | def foo(a, (b, c)): ...
2 | def foo((a)): ...
3 | lambda (a,): ...
| ^ Syntax Error: invalid syntax