Message 362547 - Python tracker

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Author	pitrou
Recipients	ogrisel, pierreglaser, pitrou
Date	2020-02-23.22:47:08
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1582498028.39.0.0123392152586.issue39734@roundup.psfhosted.org>
In-reply-to

Content
In issue39681 we reestablished the fallback to read() when a file-like object doesn't provide readinto() in _pickle.c. However, doing so leads to lower performance and all file-like object should nowadays provide readinto() (simply by deriving from the right base class - e.g. io.BufferedIOBase). I propose to issue a DeprecationWarning when the fallback behaviour is selected, so that one day we can finally remove it.

In issue39681 we reestablished the fallback to read() when a file-like object doesn't provide readinto() in _pickle.c.  However, doing so leads to lower performance and all file-like object should nowadays provide readinto() (simply by deriving from the right base class - e.g. io.BufferedIOBase).

I propose to issue a DeprecationWarning when the fallback behaviour is selected, so that one day we can finally remove it.

History
Date	User	Action	Args
2020-02-23 22:47:08	pitrou	set	recipients: + pitrou, ogrisel, pierreglaser
2020-02-23 22:47:08	pitrou	set	messageid: <1582498028.39.0.0123392152586.issue39734@roundup.psfhosted.org>
2020-02-23 22:47:08	pitrou	link	issue39734 messages
2020-02-23 22:47:08	pitrou	create