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Fix type annotations for stack.py (#5566)

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This commit is contained in:
Edward Nuno
2021-10-26 11:33:08 -07:00
committed by GitHub
parent 582f57f41f
commit c0ed031b3f
4 changed files with 15 additions and 11 deletions
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2
data_structures/stacks/balanced_parentheses.py
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@@ -14,7 +14,7 @@ def balanced_parentheses(parentheses: str) -> bool:
>>> balanced_parentheses("")
True
"""
stack = Stack()
stack: Stack[str] = Stack()
bracket_pairs = {"(": ")", "[": "]", "{": "}"}
for bracket in parentheses:
if bracket in bracket_pairs: