Python - 从文件中读取行并忽略＆＃34;之间的行。 ＆＃34;

Question

我编写了一个代码来读取文件并检查括号是否平衡。我想修改这段代码，它读取文件并忽略文字字符串和文字字符中的括号，但我不太清楚如何继续这样做。谁能帮助我并给我一个想法？继承我的代码：

def isValidSource(fileName):    
    textFile = open(fileName)
    readFile = textFile.read()
    stack = []
    for line in readFile:
        for token in line:
            if token in "{[(":
                stack.append( token )
            elif token in "}])":
                if not len(stack):
                    return False, "Delimiters are not balanced"
                else :
                    left = stack.pop()
                    print stack
                    if (token == "}" and left != "{") or \
                       (token == "]" and left != "[") or \
                       (token == ")" and left != "("):
                        return False, "Delimiters are not balanced"
    return not len(stack), "The stack is empty; all delimiters are paired and balanced"

Answer 1

您可以保留一个布尔标志来指示您是否在字符串中。如果您在for token in line循环中遇到"，请切换该标记。如果设置了标志，则可以跳过平衡检查逻辑。