upstream/ipython Files · IPython/terminal/pt_inputhooks/qt.py

IPython/lib/editorhooks.py: wait for process even if wait=False...

IPython/lib/editorhooks.py: wait for process even if wait=False The wait parameter is meant to add a prompt before returning from the hook for editors that exit immediatly (fork/CreateProcess) but it accidently prevented waiting at all for the process when it was False. I think it was meant to be `not wait and proc.wait()` but we might as well wait for the process in the `wait=True` case anyhow. It's less confusing.

Thomas Kluyver - - Load All Authors

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      import sys

      from IPython.external.qt_for_kernel import QtCore, QtGui

      # If we create a QApplication, keep a reference to it so that it doesn't get

      # garbage collected.

      _appref = None

      def inputhook(context):

          global _appref

          app = QtCore.QCoreApplication.instance()

          if not app:

              _appref = app = QtGui.QApplication([" "])

          event_loop = QtCore.QEventLoop(app)

          if sys.platform == 'win32':

              # The QSocketNotifier method doesn't appear to work on Windows.

              # Use polling instead.

              timer = QtCore.QTimer()

              timer.timeout.connect(event_loop.quit)

              while not context.input_is_ready():

                  timer.start(50)  # 50 ms

                  event_loop.exec_()

                  timer.stop()

          else:

              # On POSIX platforms, we can use a file descriptor to quit the event

              # loop when there is input ready to read.

              notifier = QtCore.QSocketNotifier(context.fileno(), QtCore.QSocketNotifier.Read)

              notifier.setEnabled(True)

              notifier.activated.connect(event_loop.exit)

              event_loop.exec_()

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				import sys
				from IPython.external.qt_for_kernel import QtCore, QtGui

				# If we create a QApplication, keep a reference to it so that it doesn't get
				# garbage collected.
				_appref = None

				def inputhook(context):
				global _appref
				app = QtCore.QCoreApplication.instance()
				if not app:
				_appref = app = QtGui.QApplication([" "])
				event_loop = QtCore.QEventLoop(app)

				if sys.platform == 'win32':
				# The QSocketNotifier method doesn't appear to work on Windows.
				# Use polling instead.
				timer = QtCore.QTimer()
				timer.timeout.connect(event_loop.quit)
				while not context.input_is_ready():
				timer.start(50) # 50 ms
				event_loop.exec_()
				timer.stop()
				else:
				# On POSIX platforms, we can use a file descriptor to quit the event
				# loop when there is input ready to read.
				notifier = QtCore.QSocketNotifier(context.fileno(), QtCore.QSocketNotifier.Read)
				notifier.setEnabled(True)
				notifier.activated.connect(event_loop.exit)
				event_loop.exec_()