Python修改文件方法——字符串替换

#字符串替换import sysf = open("yesterday2","r",encoding="utf-8")f_new = open("yesterday2.bak","w",encoding="utf-8")

find_str = sys.argv[1]replace_str = sys.argv[2]for line in f:    if find_str in line:        line = line.replace(find_str,replace_str)    f_new.write(line)f.close()f_new.close()

#with执行问了，文件就自动关闭了！ 开发规范一行代码不能超过80字符： \

with open("yesterday2","r",encoding="utf-8") as f ,\         open("yesterday2", "r", encoding="utf-8") as f2:    for line in f:        print(line)

原文地址：https://www.cnblogs.com/wzsx/p/8969775.html