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Treat bare Callable as Callable[..., Any] #1505

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Merged
merged 1 commit into from
May 8, 2016
Merged

Treat bare Callable as Callable[..., Any] #1505

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5 changes: 5 additions & 0 deletions mypy/test/data/check-functions.test
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Original file line number Diff line number Diff line change
Expand Up @@ -1531,6 +1531,11 @@ from typing import Callable, Any

def foo(f: Callable) -> bool:
return f()

def f1() -> bool:
return False

foo(f1)
[builtins fixtures/bool.py]

[case testFunctionNestedWithinWith]
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5 changes: 3 additions & 2 deletions mypy/typeanal.py
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Expand Up @@ -210,12 +210,13 @@ def visit_ellipsis_type(self, t: EllipsisType) -> Type:
def analyze_callable_type(self, t: UnboundType) -> Type:
fallback = self.builtin_type('builtins.function')
if len(t.args) == 0:
# Callable (bare)
# Callable (bare). Treat as Callable[..., Any].
return CallableType([AnyType(), AnyType()],
[nodes.ARG_STAR, nodes.ARG_STAR2],
[None, None],
ret_type=AnyType(),
fallback=fallback)
fallback=fallback,
is_ellipsis_args=True)
elif len(t.args) == 2:
ret_type = t.args[1].accept(self)
if isinstance(t.args[0], TypeList):
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