python根据开头和结尾字符串获得指定字符串的中间字符串，python字符串,def GetMiddl

python根据开头和结尾字符串获得指定字符串的中间字符串，python字符串,def GetMiddl

def GetMiddleStr(content,startStr,endStr):    startIndex = content.index(startStr)    if startIndex>=0:        startIndex += len(startStr)    endIndex = content.index(endStr)    return content[startIndex:endIndex]if __name__=='__main__':    print(GetMiddleStr('<div class="a">byrx.net</div>','<div class="a">','</div>'))

                                返回结果

byrx.net