python中文件内容替换

文件内容替换

# fileName 文件名

# oldStr 源字符串

# newStr 新字符串

def fileContentAlter(fileName, oldStr, newStr):

　　file_data = ""

　　with open(fileName, "r", encoding="utf-8") as f:

　　for line in f:

　　　　line = line.replace(oldStr, newStr)

　　　　file_data += line

　　with open(fileName, "w", encoding="utf-8") as f:

　　　　f.write(file_data)