1、目的

想对update_variable.py文件中的配置进行修改，数据通过系统接口自动获取

update_variable.py

my_name=‘null‘

my_age=18

2、代码

update_file.py

# name=phyger

# line=‘my name: {name}‘

# new=line.replace(‘{name}‘,name)

# print(new)

# cur_abspath=os.path.abspath(__file__)

import os

cur_path=os.path.dirname(__file__)

def change_words(old_str,new_str):

file_data=‘‘

with open(cur_path+‘\\update_variable.py‘,mode=‘r+‘) as f:

for line in f:

if old_str in line:

if isinstance(new_str,int):

print(old_str+‘ FOUNDED!‘)

line=old_str+‘=%d‘%(new_str)

else:

print(old_str+‘ FOUNDED!‘)

line=old_str+‘=‘+‘\‘‘+new_str+‘\‘\n‘

file_data+=line

f.close()

with open(cur_path+‘\\update_variable.py‘,mode=‘w‘) as f:

f.write(file_data)

f.close()

def change_name(new_name):

change_words(‘my_name‘,new_name)

def change_age(new_age):

change_words(‘my_age‘,new_age)

if __name__ == "__main__":

new_name=‘phyger‘

change_name(new_name)

new_age=88

change_age(new_age)

3、运行后结果

C:\Users\Administrator\Desktop\document>D:/Python37/python.exe c:/Users/Administrator/Desktop/document/update_file.py

my_name FOUNDED!

my_age FOUNDED!

C:\Users\Administrator\Desktop\document>

update_variable.py

my_name=‘phyger‘

my_age=88

OK，搞定！

原文地址：https://www.cnblogs.com/phyger/p/12442060.html