Python3之括号匹配问题

# import lib

# def function
def Bracket_Matching(param):
    symbol = {"}": "{", "]": "[", ")": "("}
    symbol_L = symbol.values()
    symbol_R = symbol.keys()
    temp = []
    for i in param:
    	#进栈
        if i in symbol_L:
            temp.append(i)
        elif i in symbol_R:
            # 要么出栈，要么出错
            if temp and temp[-1] == symbol[i]:
                temp.pop()
            else:
                return False
         #"["
    if len(temp)==0:
        return True
    else:
        return False


# main
if __name__ == "__main__":
   # example = input()
    example = "["
    example1="3 * {3 +[(2 -3) * (4+5)]}"
    result = Bracket_Matching(example)
    result1 = Bracket_Matching(example1)
    print(result,result1)

	

输出结果：

False True