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Issue #15471: Don't use mutable object as default values for the

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parameters of importlib.__import__().
This commit is contained in:
Brett Cannon 2012-08-06 16:34:44 -04:00
parent 638de338e6
commit cb4996afe4
6 changed files with 81 additions and 74 deletions
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5
Lib/importlib/_bootstrap.py
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@ -1587,7 +1587,7 @@ def _get_supported_file_loaders():
return [extensions, source, bytecode]
def __import__(name, globals={}, locals={}, fromlist=[], level=0):
def __import__(name, globals=None, locals=None, fromlist=(), level=0):
"""Import a module.
The 'globals' argument is used to infer where the import is occuring from
@ -1601,7 +1601,8 @@ def __import__(name, globals={}, locals={}, fromlist=[], level=0):
if level == 0:
module = _gcd_import(name)
else:
package = _calc___package__(globals)
globals_ = globals if globals is not None else {}
package = _calc___package__(globals_)
module = _gcd_import(name, package, level)
if not fromlist:
# Return up to the first dot in 'name'. This is complicated by the fact