import csv
import os


# 寻找程序所在目录下的所有文本文件,并打印文件名
def scan_files(filepath):  # 传入当前绝对路径及指定字符串

    # 用于清空filename.csv'内容
    with open('filename.csv', 'w', encoding='utf-8', newline='') as file_handler:
        file_writer = csv.writer(file_handler)
        row = ['file_no', 'filename']
        file_writer.writerow(row)

    files = os.listdir(filepath)
    file_no = 0
    # 遍历所有文件
    print('files list:')
    for filename in files:
        file_no = file_no + 1
        print('%d--' % file_no, end='')
        print(filename)

        # 保存文件名到filename.csv'
        with open('filename.csv', 'a+', encoding='utf-8', newline='') as file_handler:
            file_writer = csv.writer(file_handler)
            row = [file_no, filename]
            file_writer.writerow(row)
    return file_no