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Implement PEP 451 (ModuleSpec).

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This commit is contained in:
Eric Snow 2013-11-22 09:05:39 -07:00
parent 9e6097ebe7
commit b523f8433a
37 changed files with 6972 additions and 4387 deletions
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11
Lib/pkgutil.py
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@ -430,6 +430,7 @@ def iter_importers(fullname=""):
for item in path:
yield get_importer(item)
def get_loader(module_or_name):
"""Get a PEP 302 "loader" object for module_or_name
@ -570,6 +571,7 @@ def extend_path(path, name):
return path
def get_data(package, resource):
"""Get a resource from a package.
@ -592,10 +594,15 @@ def get_data(package, resource):
which does not support get_data(), then None is returned.
"""
loader = get_loader(package)
spec = importlib.find_spec(package)
if spec is None:
return None
loader = spec.loader
if loader is None or not hasattr(loader, 'get_data'):
return None
mod = sys.modules.get(package) or loader.load_module(package)
# XXX needs test
mod = (sys.modules.get(package) or
importlib._bootstrap._SpecMethods(spec).load())
if mod is None or not hasattr(mod, '__file__'):
return None