[Kde-bindings] [bindings] [Bug 333683] New: PyKDE4 KDialog.None is illegal syntax for python3

[Wolfgang Rohdewald]

https://bugs.kde.org/show_bug.cgi?id=333683

            Bug ID: 333683
           Summary: PyKDE4 KDialog.None is illegal syntax for python3
    Classification: Unclassified
           Product: bindings
           Version: 4.13.0
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: pykde
          Assignee: kde-bindings at kde.org
          Reporter: wolfgang at rohdewald.de

as the summary says. In python3, None is illegal for user defined attributes.
Please define a new name like NoButton for both python2-pykde4 and
python3-pykde4 (and KF5 of course), otherwise it is more difficult to write
portable python code.

See https://docs.python.org/3.2/library/constants.html

actually this was illegal even with Python2.7, but it seems its C bindings did
not enforce that, letting pykde4 get through with that bug:

https://docs.python.org/2.7/library/constants.html

Please check if there are more such definitions for constants None, False, True

This fails with python 3.4.0:

i5:[Exit 1 (SIGHUP)]~/vpn/kajongg/src (master) cat xx.py ; python3 xx.py
from PyKDE4.kdeui import KDialog
# print(KDialog.Default) this works as expected
print(KDialog.None) # this fails with a syntax error

  File "xx.py", line 3
    print(KDialog.None) # this fails with a syntax error
                     ^
SyntaxError: invalid syntax

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