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Ensure shortened module path points to expected object. #273

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Merged
merged 1 commit into from
Jul 31, 2017
Merged

Ensure shortened module path points to expected object. #273

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13 changes: 12 additions & 1 deletion sphinx_gallery/backreferences.py
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Original file line number Diff line number Diff line change
Expand Up @@ -76,12 +76,23 @@ def get_mapping(self):

def get_short_module_name(module_name, obj_name):
""" Get the shortest possible module name """
scope = {}
try:
# Find out what the real object is supposed to be.
exec('from %s import %s' % (module_name, obj_name), scope, scope)
real_obj = scope[obj_name]
except Exception:
return module_name

parts = module_name.split('.')
short_name = module_name
for i in range(len(parts) - 1, 0, -1):
short_name = '.'.join(parts[:i])
scope = {}
try:
exec('from %s import %s' % (short_name, obj_name))
exec('from %s import %s' % (short_name, obj_name), scope, scope)
# Ensure shortened object is the same as what we expect.
assert real_obj is scope[obj_name]
except Exception: # libraries can throw all sorts of exceptions...
# get the last working module name
short_name = '.'.join(parts[:(i + 1)])
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