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Merge pull request #299 from wiredfool/ucs

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Fail on all import errors
This commit is contained in:
Alex Clark ☺ 2013-07-23 10:37:48 -07:00
commit 5d2c8ebbac
1 changed files with 20 additions and 9 deletions
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27
PIL/Image.py
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@ -28,10 +28,7 @@ from __future__ import print_function
from PIL import VERSION, PILLOW_VERSION, _plugins from PIL import VERSION, PILLOW_VERSION, _plugins
try:
import warnings import warnings
except ImportError:
warnings = None
class _imaging_not_installed: class _imaging_not_installed:
# module placeholder # module placeholder
@ -56,22 +53,36 @@ try:
from PIL import _imaging as core from PIL import _imaging as core
if PILLOW_VERSION != getattr(core, 'PILLOW_VERSION', None): if PILLOW_VERSION != getattr(core, 'PILLOW_VERSION', None):
raise ImportError("The _imaging extension was built for another " raise ImportError("The _imaging extension was built for another "
" version of Pillow or PIL. Most PIL functions " " version of Pillow or PIL")
" will be disabled ")
except ImportError as v: except ImportError as v:
core = _imaging_not_installed() core = _imaging_not_installed()
if str(v)[:20] == "Module use of python" and warnings: # Explanations for ways that we know we might have an import error
if str(v).startswith("Module use of python"):
# The _imaging C module is present, but not compiled for # The _imaging C module is present, but not compiled for
# the right version (windows only). Print a warning, if # the right version (windows only). Print a warning, if
# possible. # possible.
warnings.warn( warnings.warn(
"The _imaging extension was built for another version " "The _imaging extension was built for another version "
"of Python; most PIL functions will be disabled", "of Python.",
RuntimeWarning RuntimeWarning
) )
if str(v).startswith("The _imaging extension") and warnings: elif str(v).startswith("The _imaging extension"):
warnings.warn(str(v), RuntimeWarning) warnings.warn(str(v), RuntimeWarning)
elif "Symbol not found: _PyUnicodeUCS2_FromString" in str(v):
warnings.warn(
"The _imaging extension was built for Python with UCS2 support; "
"recompile PIL or build Python --without-wide-unicode. ",
RuntimeWarning
)
elif "Symbol not found: _PyUnicodeUCS4_FromString" in str(v):
warnings.warn(
"The _imaging extension was built for Python with UCS4 support; "
"recompile PIL or build Python --with-wide-unicode. ",
RuntimeWarning
)
# Fail here anyway. Don't let people run with a mostly broken Pillow.
raise
try: try:
import builtins import builtins