prompt="\n please enter some thing:"
prompt +="\n enter quit to end the program."
message=""
while message !='quit':
message=input(prompt)
if message != 'quit'
print(message)
执行如下:

prompt="\n please enter some thing:"
prompt +="\n enter quit to end the program."
message=""
while message !='quit':
message=input(prompt)
if message != 'quit'
print(message)
执行如下:

4831
3043

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