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---
source: crates/ruff_python_parser/tests/fixtures.rs
input_file: crates/ruff_python_parser/resources/inline/err/lambda_body_with_yield_expr.py
---
## AST
```
Module(
ModModule {
node_index: NodeIndex(None),
range: 0..41,
body: [
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 0..17,
value: Lambda(
ExprLambda {
node_index: NodeIndex(None),
range: 0..17,
parameters: Some(
Parameters {
range: 7..8,
node_index: NodeIndex(None),
posonlyargs: [],
args: [
ParameterWithDefault {
range: 7..8,
node_index: NodeIndex(None),
parameter: Parameter {
range: 7..8,
node_index: NodeIndex(None),
name: Identifier {
id: Name("x"),
range: 7..8,
node_index: NodeIndex(None),
},
annotation: None,
},
default: None,
},
],
vararg: None,
kwonlyargs: [],
kwarg: None,
},
),
body: Yield(
ExprYield {
node_index: NodeIndex(None),
range: 10..17,
value: Some(
Name(
ExprName {
node_index: NodeIndex(None),
range: 16..17,
id: Name("y"),
ctx: Load,
},
),
),
},
),
},
),
},
),
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 18..40,
value: Lambda(
ExprLambda {
node_index: NodeIndex(None),
range: 18..40,
parameters: Some(
Parameters {
range: 25..26,
node_index: NodeIndex(None),
posonlyargs: [],
args: [
ParameterWithDefault {
range: 25..26,
node_index: NodeIndex(None),
parameter: Parameter {
range: 25..26,
node_index: NodeIndex(None),
name: Identifier {
id: Name("x"),
range: 25..26,
node_index: NodeIndex(None),
},
annotation: None,
},
default: None,
},
],
vararg: None,
kwonlyargs: [],
kwarg: None,
},
),
body: YieldFrom(
ExprYieldFrom {
node_index: NodeIndex(None),
range: 28..40,
value: Name(
ExprName {
node_index: NodeIndex(None),
range: 39..40,
id: Name("y"),
ctx: Load,
},
),
},
),
},
),
},
),
],
},
)
```
## Errors
|
1 | lambda x: yield y
| ^^^^^^^ Syntax Error: Yield expression cannot be used here
2 | lambda x: yield from y
|
|
1 | lambda x: yield y
2 | lambda x: yield from y
| ^^^^^^^^^^^^ Syntax Error: Yield expression cannot be used here
|