python遍历文件夹下所有文件

total_num = 0

for base_path,folder_list,file_list in os.walk(target_path):

    for file_name in file_list:

        file_path = os.path.join(base_path,file_name)

        file_ext = file_path.rsplit('.',maxsplit=1)

        if len(file_ext) != 2:

            # 没有后缀名

            continue

        if file_ext[1] != 'py':

            # 不是py文件

            continue

        file_num = 0

        with open(file_path,'rb') as f:

            for line in f:

                # 去空格

                line = line.strip()

                if not line:

                    continue

                # 去除 # 注释

                if line.startswith(b'#'):

                    continue

                file_num += 1

        total_num += file_num