有的时候需要有规律的修改一个文件，这个脚本还是很有用的。
import os
from tempfile import mkstemp
from shutil import move
from os import remove
def replace(source_file_path, change):
fh, target_file_path = mkstemp()
with open(target_file_path, 'w', encoding='utf-8') as target_file:
with open(source_file_path, 'r', encoding='utf-8') as source_file:
for line in source_file:
target_file.write(change(line))
remove(source_file_path)
move(target_file_path, source_file_path)
def change_package(line):
key = 'package com.google.zxing.client'
if line.startswith(key) and line != (key + ';'):
subFix = line[len(key):]
if (not subFix.startswith(';')) and (not subFix.startswith('.')):
dd = key + '.' + subFix
print(dd)
line = dd
return line
def travel_folder(folder_name, change):
for x in os.walk(folder_name):
path = x[0]
for item in x[2]:
replace(str(path) + "/" + str(item), change)
def change_keys(line):
items = line.split(',')
new_items = []
new_items.append(items[1])
new_items.append(items[2])
new_items.append(items[2])
new_items.append(items[3])
return ','.join(new_items) + "\n"
if __name__ == '__main__':
path = '/Users/taoli/Downloads/ep_wallet_priv.csv'
replace(path, change_keys)
# path = 'your folder'
# travel_folder(path, change_package)
- 遍历文件夹使用
travel_folder方法，处理单个文件使用replace方法 - 需要传入一个处理一行的方法，比如这里的
change_keys和change_package
