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masahitojp/stack.py

Created July 12, 2019 07:48
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check generics for mypy
Raw
stack.py
from typing import TypeVar, Generic
T = TypeVar('T', bound='Shape')
class Stack(Generic[T]):
def __init__(self) -> None:
# Create an empty list with items of type a T
print(__annotations__) # {}
self.items: List[T] = []
stack:Stack[int] = Stack[int]()
print(__annotations__) # {'stack': __main__.Stack[int]}
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