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  1. Qt for Python
  2. PYSIDE-1051

Unable to call QtCore.QObject.__new__ in Python 2.7

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P2: Important
    • Resolution: Done
    • Affects Version/s: 5.12.4, 5.13.0
    • Fix Version/s: 5.13.1
    • Component/s: PySide, Shiboken
    • Labels:
    • Platform/s:
      All
    • Commits:
      cd6172063756a59e02f1a7857bc60a1737214ad1 (pyside/pyside-setup/5.13) 0add41759ad3346a8ea93863e347e73e98700bec (pyside/pyside-setup/5.12)

      Description

      We have a singleton metaclass based on type(QtCore.QObject) in the __call__
      method we create a new instance of the class and return it

      def __call__(self, *args, **kwargs):
    instance = self.__new__(self, *args, **kwargs)
    instance.__init__(*args, **kwargs)
    return instance

      or, if you want the one-liner version:

      QtCore.QObject.__new__(QtCore.QObject, "", (), {})

      the error obtained running this code on Python2 is:

      TypeError: PySide2.QtCore.QObject.__new__(PySide2.QtCore.QObject) is not safe, use object.__new__()

      the same one-liner works on Python3, I think it is related to PYSIDE-816 and heap types.

        Attachments

          Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. PYSIDE-816 Unable to call type(QtWidgets.QWidget).__new__ in Python 2.7

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. PYSIDE-1767 Pyside6/Shiboken and ABCMeta Bug

          • Not Evaluated - Not yet evaluated/prioritized
          • Reported
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            Activity

              People

              Assignee:
              ctismer Christian Tismer
              Reporter:
              qtlavoratore Nicolo' Cristini
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                Dates

                Created:
                Updated:
                Resolved:

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