python之文件名称过长-截取缩短文件名称

if __name__ == '__main__':
    file ='ABC_BC_BCD__1ABC_20210930A095512_20210930A095522_033123_03E123_AABC_GUOQIN'

    # 截取
    # 拆分 文件名称
    splieFile = file.split("_")
    length = len(splieFile)
    print(length)

    index = ''
    # 遍历
    for i in range(length):
        if( i == 6):
            continue
        index += splieFile[i] + "_"
    str_len = len(index)

    # 截取
    index = index[0:str_len-1]

    # 打印
    print(index)

源文件长度：ABC_BC_BCD__1ABC_20210930A095512_20210930A095522_033123_03E123_AABC_GUOQIN