class ReplaceFile:
    def replaceFile():
        beReplaced = input('请输入需要被替换的词语：')
        replaced = input('请输入替换的词语：')
        with open(r'C:\Users\Lenovo\Desktop\test.txt','r') as file:
            readFile = file.read()
            newStr = readFile.replace(beReplaced,replaced)
        with open(r'C:\Users\Lenovo\Desktop\test.txt','w') as newFile:
            newFile.write(newStr)
if __name__ == '__main__':
    ReplaceFile.replaceFile()