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Issue #23732: Mention the new -b semantics in the porting HOWTO.

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Brett Cannon 2015-04-13 14:37:50 -04:00
parent f299abdafa
commit 4269d6db93
1 changed files with 6 additions and 4 deletions
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Doc/howto/pyporting.rst
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@ -348,10 +348,12 @@ tox with your continuous integration system so that you never accidentally break
Python 2 or 3 support.
You may also want to use use the ``-bb`` flag with the Python 3 interpreter to
trigger an exception when you are comparing bytes to strings. Usually it's
simply ``False``, but if you made a mistake in your separation of text/binary
data handling you may be accidentally comparing text and binary data. This flag
will raise an exception when that occurs to help track down such cases.
trigger an exception when you are comparing bytes to strings or bytes to an int
(the latter is available starting in Python 3.5). By default type-differing
comparisons simply return ``False``, but if you made a mistake in your
separation of text/binary data handling or indexing on bytes you wouldn't easily
find the mistake. This flag will raise an exception when these kinds of
comparisons occur, making the mistake much easier to track down.
And that's mostly it! At this point your code base is compatible with both
Python 2 and 3 simultaneously. Your testing will also be set up so that you