python檔案修改

檔案轉至：

1 def alter(file,old_str,new_str):

2     """
3     替換檔案中的字串
4     :param file:檔名
5     :param old_str:就字串
6     :param new_str:新字串
7     :return:
8     """
9     file_data = ""
10     with open(file, "r", encoding="utf-8") as f:
11         for line in f:
12             if old_str in line:
13                 line = line.replace(old_str,new_str)
14             file_data += line
15     with open(file,"w",encoding="utf-8") as f:
16         f.write(file_data)
17 18 alter("file1", "09876", "python")

import os

def alter(file,old_str,new_str):
"""將替換的字串寫到乙個新的檔案中，然後將原檔案刪除，新檔案改為原來檔案的名字
:param file: 檔案路徑
:param old_str: 需要替換的字串
:param new_str: 替換的字串
:return: none
"""with open(file, "r", encoding="utf-8") as f1,open("%s.bak" % file, "w", encoding="utf-8") as f2:
for line in f1:
if old_str in line:
line = line.replace(old_str, new_str)
f2.write(line)
os.remove(file)
os.rename("%s.bak" % file, file)
alter("file1", "python", "測試")

1 import re,os

2 def alter(file,old_str,new_str):
3 4     with open(file, "r", encoding="utf-8") as f1,open("%s.bak" % file, "w", encoding="utf-8") as f2:
5         for line in f1:
6             f2.write(re.sub(old_str,new_str,line))
7     os.remove(file)
8     os.rename("%s.bak" % file, file)
9 alter("file1", "admin", "password")

1 def alter(file,old_str,new_str):

2     """
3     替換檔案中的字串
4     :param file:檔名
5     :param old_str:就字串
6     :param new_str:新字串
7     :return:
8     """
9     file_data = ""
10     with open(file, "r", encoding="utf-8") as f:
11         for line in f:
12             if old_str in line:
13                 line = line.replace(old_str,new_str)
14             file_data += line
15     with open(file,"w",encoding="utf-8") as f:
16         f.write(file_data)
17 18 alter("file1", "09876", "python")

import os

def alter(file,old_str,new_str):
"""將替換的字串寫到乙個新的檔案中，然後將原檔案刪除，新檔案改為原來檔案的名字
:param file: 檔案路徑
:param old_str: 需要替換的字串
:param new_str: 替換的字串
:return: none
"""with open(file, "r", encoding="utf-8") as f1,open("%s.bak" % file, "w", encoding="utf-8") as f2:
for line in f1:
if old_str in line:
line = line.replace(old_str, new_str)
f2.write(line)
os.remove(file)
os.rename("%s.bak" % file, file)
alter("file1", "python", "測試")

1 import re,os

2 def alter(file,old_str,new_str):
3 4     with open(file, "r", encoding="utf-8") as f1,open("%s.bak" % file, "w", encoding="utf-8") as f2:
5         for line in f1:
6             f2.write(re.sub(old_str,new_str,line))
7     os.remove(file)
8     os.rename("%s.bak" % file, file)
9 alter("file1", "admin", "password")

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