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---
source: crates/ruff_python_parser/tests/fixtures.rs
input_file: crates/ruff_python_parser/resources/inline/err/params_non_default_after_default.py
---
## AST
```
Module(
ModModule {
node_index: NodeIndex(None),
range: 0..30,
body: [
FunctionDef(
StmtFunctionDef {
node_index: NodeIndex(None),
range: 0..29,
is_async: false,
decorator_list: [],
name: Identifier {
id: Name("foo"),
range: 4..7,
node_index: NodeIndex(None),
},
type_params: None,
parameters: Parameters {
range: 7..24,
node_index: NodeIndex(None),
posonlyargs: [],
args: [
ParameterWithDefault {
range: 8..12,
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,
},
default: Some(
NumberLiteral(
ExprNumberLiteral {
node_index: NodeIndex(None),
range: 10..12,
value: Int(
10,
),
},
),
),
},
ParameterWithDefault {
range: 14..15,
node_index: NodeIndex(None),
parameter: Parameter {
range: 14..15,
node_index: NodeIndex(None),
name: Identifier {
id: Name("b"),
range: 14..15,
node_index: NodeIndex(None),
},
annotation: None,
},
default: None,
},
ParameterWithDefault {
range: 17..23,
node_index: NodeIndex(None),
parameter: Parameter {
range: 17..23,
node_index: NodeIndex(None),
name: Identifier {
id: Name("c"),
range: 17..18,
node_index: NodeIndex(None),
},
annotation: Some(
Name(
ExprName {
node_index: NodeIndex(None),
range: 20..23,
id: Name("int"),
ctx: Load,
},
),
),
},
default: None,
},
],
vararg: None,
kwonlyargs: [],
kwarg: None,
},
returns: None,
body: [
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 26..29,
value: EllipsisLiteral(
ExprEllipsisLiteral {
node_index: NodeIndex(None),
range: 26..29,
},
),
},
),
],
},
),
],
},
)
```
## Errors
|
1 | def foo(a=10, b, c: int): ...
| ^ Syntax Error: Parameter without a default cannot follow a parameter with a default
|
|
1 | def foo(a=10, b, c: int): ...
| ^^^^^^ Syntax Error: Parameter without a default cannot follow a parameter with a default
|