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Don't pretend to support Google App Engine. #8939

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Merged
merged 1 commit into from
Aug 25, 2017
Merged

Don't pretend to support Google App Engine. #8939

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48 changes: 7 additions & 41 deletions lib/matplotlib/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -212,28 +212,7 @@ def _is_writable_dir(p):
p is a string pointing to a putative writable dir -- return True p
is such a string, else False
"""
try:
p + '' # test is string like
except TypeError:
return False

# Test whether the operating system thinks it's a writable directory.
# Note that this check is necessary on Google App Engine, because the
# subsequent check will succeed even though p may not be writable.
if not os.access(p, os.W_OK) or not os.path.isdir(p):
return False

# Also test that it is actually possible to write to a file here.
try:
t = tempfile.TemporaryFile(dir=p)
try:
t.write(b'1')
finally:
t.close()
except:
return False

return True
return os.access(p, os.W_OK) and os.path.isdir(p)


class Verbose(object):
Expand Down Expand Up @@ -509,17 +488,12 @@ def _get_home():
:see:
http://mail.python.org/pipermail/python-list/2005-February/325395.html
"""
try:
if six.PY2 and sys.platform == 'win32':
path = os.path.expanduser(b"~").decode(sys.getfilesystemencoding())
else:
path = os.path.expanduser("~")
except ImportError:
# This happens on Google App Engine (pwd module is not present).
pass
if six.PY2 and sys.platform == 'win32':
path = os.path.expanduser(b"~").decode(sys.getfilesystemencoding())
else:
if os.path.isdir(path):
return path
path = os.path.expanduser("~")
if os.path.isdir(path):
return path
for evar in ('HOME', 'USERPROFILE', 'TMP'):
path = os.environ.get(evar)
if path is not None and os.path.isdir(path):
Expand All @@ -531,17 +505,9 @@ def _create_tmp_config_dir():
"""
If the config directory can not be created, create a temporary
directory.

Returns None if a writable temporary directory could not be created.
"""
try:
tempdir = tempfile.gettempdir()
except NotImplementedError:
# Some restricted platforms (such as Google App Engine) do not provide
# gettempdir.
return None
configdir = os.environ['MPLCONFIGDIR'] = (
tempfile.mkdtemp(prefix='matplotlib-', dir=tempdir))
tempfile.mkdtemp(prefix='matplotlib-'))
return configdir


Expand Down