Repository navigation
(馃悶) Crash with TypeGuard on __call__聽#16187
Description
from typing import TypeGuard
class A:
def __call__(self, a) -> TypeGuard[int]:
return True
a: A
assert a(a=1)> mypy test.py --tb
test.py:7: error: INTERNAL ERROR -- Please try using mypy master on GitHub:
https://mypy.readthedocs.io/en/stable/common_issues.html#using-a-development-mypy-build
Please report a bug at https://github.com/python/mypy/issues
version: 1.5.1
Traceback (most recent call last):
File "<frozen runpy>", line 198, in _run_module_as_main
File "<frozen runpy>", line 88, in _run_code
File "mypy\checker.py", line 584, in accept
# least one type that we don't know.
File "mypy\nodes.py", line 1435, in accept
File "mypy\checker.py", line 4409, in visit_assert_stmt
return # The partial type is None.
File "mypy\checker.py", line 5455, in find_isinstance_check
return [typ], []
File "mypy\checker.py", line 5501, in find_isinstance_check_helper
"""
AssertionError:
test.py:7: : note: use --pdb to drop into pdb
Activity
Fix crash on TypeGuard in __call__ (#16516)