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"""Deal with pyface backend issues"""
# Author: Christian Brodbeck <christianbrodbeck@nyu.edu>
#
# License: BSD (3-clause)
def _check_backend():
from ..utils import _check_pyface_backend
try:
from pyface.api import warning
except ImportError:
warning = None
backend, status = _check_pyface_backend()
if status == 0:
return
elif status == 1:
msg = ("The currently selected Pyface backend %s has not been "
"extensively tested. We recommend using qt4 which can be "
"enabled by installing the pyside package. If you proceed with "
"the current backend pease let the developers know your "
"experience." % backend)
elif status == 2:
msg = ("The currently selected Pyface backend %s has known issues. We "
"recommend using qt4 which can be enabled by installing the "
"pyside package." % backend)
warning(None, msg, "Pyface Backend Warning")
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