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Fix check for DISPLAY on PyQt5. #8149

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Merged
merged 1 commit into from
Mar 19, 2017
Merged

Fix check for DISPLAY on PyQt5. #8149

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10 changes: 9 additions & 1 deletion 10 lib/matplotlib/backends/backend_qt5.py
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Original file line number Diff line number Diff line change
Expand Up @@ -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')
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