The deprecated wstr and wstr_length members of the C implementation of unicode objects were removed, per PEP 623. In the unittest module, a number of long deprecated methods and classes were removed. (They had been deprecated since Python 3.1 or 3.2). The deprecated smtpd and distutils modules have been removed (see PEP 594 and PEP 632. The setuptools package continues to provide the distutils module.
Invalid backslash escape sequences in strings now warn with SyntaxWarning instead of DeprecationWarning, making them more visible. (They will become syntax errors in the future.) The internal representation of integers has changed in preparation for performance enhancements.
#python-3124 #maintenance-release #deprecations #performance-enhancements #python-software-foundation
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