[1.6.x] Fixed #21335 -- Use importlib from python3 when using python3
Backport of 3351e94ffa
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@ -1,6 +1,8 @@
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# Taken from Python 2.7 with permission from/by the original author.
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# Taken from Python 2.7 with permission from/by the original author.
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import sys
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import sys
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from django.utils import six
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def _resolve_name(name, package, level):
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def _resolve_name(name, package, level):
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"""Return the absolute name of the module to be imported."""
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"""Return the absolute name of the module to be imported."""
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if not hasattr(package, 'rindex'):
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if not hasattr(package, 'rindex'):
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@ -15,22 +17,25 @@ def _resolve_name(name, package, level):
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return "%s.%s" % (package[:dot], name)
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return "%s.%s" % (package[:dot], name)
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def import_module(name, package=None):
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if six.PY3:
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"""Import a module.
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from importlib import import_module
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else:
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def import_module(name, package=None):
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"""Import a module.
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The 'package' argument is required when performing a relative import. It
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The 'package' argument is required when performing a relative import. It
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specifies the package to use as the anchor point from which to resolve the
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specifies the package to use as the anchor point from which to resolve the
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relative import to an absolute import.
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relative import to an absolute import.
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"""
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"""
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if name.startswith('.'):
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if name.startswith('.'):
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if not package:
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if not package:
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raise TypeError("relative imports require the 'package' argument")
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raise TypeError("relative imports require the 'package' argument")
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level = 0
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level = 0
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for character in name:
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for character in name:
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if character != '.':
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if character != '.':
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break
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break
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level += 1
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level += 1
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name = _resolve_name(name[level:], package, level)
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name = _resolve_name(name[level:], package, level)
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__import__(name)
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__import__(name)
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return sys.modules[name]
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return sys.modules[name]
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