Question

How to check if a string contains only valid parentheses (open close same type (), {}, []) in Python

Answer 1

def string_contains_valid_parentheses(s: str) -> bool:
    lst = []

    for ch in s:
        if ch == '(':
            lst.append(')')
        elif ch == '{':
            lst.append('}')
        elif ch == '[':
            lst.append(']')
        elif not lst or lst.pop() != ch:
            return False

    return not lst


print(string_contains_valid_parentheses("(){}[]()(){}"));



'''
run:

True
  
'''

 

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