Fix crash caused by deferred lambdas by not deferring lambdas #4232
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The inferred type of lambda may affect the surrounding scope, and lambdas inherit the binder from the surrounding scope. These things make it a bad idea to defer lambdas. Fixes #3672.
gvanrossum
approved these changes
Nov 9, 2017
mypy/checkexpr.py
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| from mypy.visitor import ExpressionVisitor | ||
| from mypy.plugin import Plugin, MethodContext, MethodSigContext, FunctionContext | ||
| from mypy.typeanal import make_optional_type | ||
| from mypy.binder import ConditionalTypeBinder |
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The inferred type of lambda may affect the surrounding scope, and
lambdas inherit the binder from the surrounding scope. These things
make it a bad idea to defer lambdas.
Fixes #3672.