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Fixed return type hinting required by pre commit for evaluate function

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Signed-off-by: Arijit De <arijitde2050@gmail.com>
This commit is contained in:
Arijit De 2023-05-30 16:11:49 +05:30
parent 800b07a34c
commit 70fd7fd5fe
1 changed files with 1 additions and 1 deletions
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data_structures/stacks/postfix_evaluation.py
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@ -74,7 +74,7 @@ def is_operator(data: str) -> bool:
return data in ["-", "+", "*", "^", "/"]
def evaluate(post_fix: list, verbose: bool = False) -> int:
def evaluate(post_fix: list, verbose: bool = False) -> int | float | str | None:
"""
Function that evaluates postfix expression using a stack.
>>> evaluate(["2", "1", "+", "3", "*"])