如何编写替换文本文件中的单词并替换它？

Question

我是python的初学者。我很困惑替换刺痛。假设我有一封邀请函。如何编写可以询问用户名的程序。和文字将以这个名字出来。帮助将不胜感激

Answer 1

'Hello yourname, welcome to stackoverflow. You should choose a friendly name'.replace('yourname', 'thank u')

'Hello thank u, welcome to stackoverflow. You should choose a friendly name'

Answer 2

The input Function

person = input('Enter your name: ')
print('Hello', person)