python - 如何刷新打印功能的输出？(How to flush output of print function?)

Question

How do I force Python's print function to output to the screen?

(如何强制将Python的打印功能输出到屏幕？)

_{This is not a duplicate of Disable output buffering - the linked question is attempting unbuffered output, while this is more general.}

(_{这不是“ 禁用输出缓冲”的重复项-链接的问题正在尝试无缓冲输出，尽管这更普遍。})

_{The top answers in that question are too powerful or involved for this one (they're not good answers for this), and this question can be found on Google by a relative newbie.}

(_{对于这个问题，最重要的答案太过强大或牵扯太多（对于这个问题，它们不是很好的答案），这个问题可以由相对新手在Google上找到。})

  ask by Walter Nissen translate from so

Answer 1

On Python 3, print can take an optional flush argument

(在Python 3上， print可以使用可选的flush参数)

print("Hello world!", flush=True)

On Python 2 you'll have to do

(在Python 2上，您必须做)

import sys
sys.stdout.flush()

after calling print .

(在调用print 。)

By default, print prints to sys.stdout (see the documentation for more about file objects ).

(默认情况下， print打印到sys.stdout （有关文件对象的更多信息，请参阅文档）。)