From d120f4769d697c9943e4170c75dae291040db8a4 Mon Sep 17 00:00:00 2001 From: Antony Lee Date: Sat, 25 Feb 2017 13:36:23 -0800 Subject: [PATCH] Fix check for DISPLAY on PyQt5. This check avoids a fatal error when the DISPLAY environment variable is not set using PyQt5, e.g. ``` MPLBACKEND=qt5agg DISPLAY= python -c 'from pylab import *; plot(); show()' ``` (The previous check only worked on PyQt4.) --- lib/matplotlib/backends/backend_qt5.py | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/lib/matplotlib/backends/backend_qt5.py b/lib/matplotlib/backends/backend_qt5.py index 0f23b12462a2..71fe6ef61de2 100644 --- a/lib/matplotlib/backends/backend_qt5.py +++ b/lib/matplotlib/backends/backend_qt5.py @@ -130,7 +130,15 @@ def _create_qApp(): app = QtWidgets.QApplication.instance() if app is None: # check for DISPLAY env variable on X11 build of Qt - if hasattr(QtGui, "QX11Info"): + if is_pyqt5(): + try: + from PyQt5 import QtX11Extras + is_x11_build = True + except ImportError: + is_x11_build = False + else: + is_x11_build = hasattr(QtGui, "QX11Info") + if is_x11_build: display = os.environ.get('DISPLAY') if display is None or not re.search(r':\d', display): raise RuntimeError('Invalid DISPLAY variable') pFad - Phonifier reborn

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