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List:       pykde
Subject:    Re: [PyQt] PyQt 5.11: Connecting to QAbstractItemModel::headerDataChanged fails
From:       Florian Bruhin <me () the-compiler ! org>
Date:       2018-06-24 7:21:02
Message-ID: 20180624072102.ojhumkwbyt64i7gp () hooch ! localdomain
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On Sat, Jun 23, 2018 at 09:11:55PM +0100, Phil Thompson wrote:
> There will be new releases tomorrow. Unfortunately its a regression in the SIP code \
> generator that affects all the wheels.

I've just tried 5.11.1 as I saw it on PyPI, but unfortunately, it seems
worse.

Connecting to QObject::destroyed seems to fail:

  >>> from PyQt5.QtCore import QObject
  >>> obj = QObject()
  >>> obj.destroyed.connect(lambda: None)
  QObject::connect: No such signal QObject::destroyed(*)
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
  TypeError: connect() failed between (QObject*) and unislot()

Connecting to QAbstractItemModel::layoutAboutToBeChanged and
QAbstractItemModel::layoutChanged:

  >>> from PyQt5.QtGui import QStandardItemModel
  >>> model = QStandardItemModel()
  >>> model.layoutAboutToBeChanged.connect(lambda: None)
  QObject::connect: No such signal \
QStandardItemModel::layoutAboutToBeChanged(QList<QPersistentModelIndex>,LayoutChangeHint)
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
  TypeError: connect() failed between \
(QList<QPersistentModelIndex>,QAbstractItemModel::LayoutChangeHint) and unislot()

Connecting to QWebEnginePage::featurePermissionRequested:

  >>> from PyQt5.QtWidgets import QApplication
  >>> from PyQt5.QtWebEngineWidgets import QWebEnginePage
  >>> app = QApplication([])
  >>> page = QWebEnginePage()
  >>> page.featurePermissionRequested.connect(lambda: None)
  QObject::connect: No such signal \
QWebEnginePage::featurePermissionRequested(QUrl,Feature)  Traceback (most recent call \
last):  File "<stdin>", line 1, in <module>
  TypeError: connect() failed between (QUrl,QWebEnginePage::Feature) and unislot()

Connecting to QProcess::error:

  >>> from PyQt5.QtCore import QProcess
  >>> proc = QProcess()
  >>> proc.error.connect(lambda: None)
  QObject::connect: No such signal QProcess::error(ProcessError)
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
  TypeError: connect() failed between (QProcess::ProcessError) and unislot()

Connecting to QLocalSocket::error:

  >>> from PyQt5.QtNetwork import QLocalSocket
  >>> socket = QLocalSocket()
  >>> socket.error.connect(lambda: None)
  QObject::connect: No such signal QLocalSocket::error(LocalSocketError)
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
  TypeError: connect() failed between (QLocalSocket::LocalSocketError) and unislot()

Trying to *emit* QNetworkReply::error:

  >>> from PyQt5.QtNetwork import QNetworkReply
  >>> class ErrorNetworkReply(QNetworkReply):
  ...   def __init__(self, *args):
  ...     super().__init__(*args)
  ...     self.error.emit(QNetworkReply.TimeoutError)
  ... 
  >>> reply = ErrorNetworkReply()
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
    File "<stdin>", line 4, in __init__
  AttributeError: 'ErrorNetworkReply' does not have a signal with the signature \
error(NetworkError)

Florian

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