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Thu Jul 5 02:23:34 EDT 2018 · https://mail.python.org/pipermail/python-dev/2018-July/154364.html

05.07.18 01:51, Victor Stinner пише:
> == Pattern 1, straighforward ==
> 
> while True:
>      line = input.readline()
>      if not line:
>          break
>      ...
> 
> IMHO here assingment expression is appropriate here. The code remains
> straighfoward to read.
> 
> while (line := input.readline()):
>      ...

We already have an idiom for this:

for line in input:
     ...

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Showing content from https://mail.python.org/pipermail/python-dev/2018-July/154364.html below:

[Python-Dev] Assignment expression and coding style: the while True case