Python修改DBF文件指定列

#!/usr/bin/env python
# _*_ coding:utf-8 _*_


"""
@Time  : 2020-01-15 10:43
@Author : Peanut_C
@FileName: DBF_Modifier.py
"""

import os
import time
import shutil
import dbf


source_dir = r'D:\'
destination_dir = r'E:\'

"""删除目标文件夹内旧文件"""
os.chdir(destination_dir)
for file in os.listdir(destination_dir):
  os.remove(file)
print('INFO ===>>> 历史文件删除完成！\n')

"""文件拷贝任务"""
os.chdir(source_dir)
for file in os.listdir(source_dir):
  shutil.copy(file, destination_dir)
print('INFO ===>>> 今日文件拷贝完成！\n')

"""DBF修改任务"""
os.chdir(destination_dir)
for file in os.listdir(destination_dir):
  tb = dbf.Table(file) # 创建tb实例
  # print(tb) # 打印tb信息
  titles = dbf.get_fields(file) # 将表头以列表形式打印出来
  # print(titles)
  if 'dealstat' in titles:
    flag = 0 # 文件修改标记
    tb.open(mode=dbf.READ_WRITE) # 读写方式打开tb
    for record in tb:
      with record as r:
        if r.dealstat is not None:
          # print(r.dealstat)
          r.dealstat = ''
          flag = 1 # 修改后将标记改为1
          # print(r.dealstat)
        else:
          continue
      # print(record.dealstat)
    tb.close()
    if flag == 0:
      print(file + "===>>>没有要修改的数据！\n")
    else:
      print(file + "===>>>DealStat字段修改完毕！\n")
  else:
    print(file + "===>>>没有DealStat字段！\n")

print('INFO ===>>> 今日文件修改完毕！\n')