diff options
Diffstat (limited to 'django/utils/importlib.py')
| -rw-r--r-- | django/utils/importlib.py | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/django/utils/importlib.py b/django/utils/importlib.py new file mode 100644 index 0000000000..ef4d0e4a27 --- /dev/null +++ b/django/utils/importlib.py @@ -0,0 +1,36 @@ +# Taken from Python 2.7 with permission from/by the original author. +import sys + +def _resolve_name(name, package, level): + """Return the absolute name of the module to be imported.""" + if not hasattr(package, 'rindex'): + raise ValueError("'package' not set to a string") + dot = len(package) + for x in xrange(level, 1, -1): + try: + dot = package.rindex('.', 0, dot) + except ValueError: + raise ValueError("attempted relative import beyond top-level " + "package") + return "%s.%s" % (package[:dot], name) + + +def import_module(name, package=None): + """Import a module. + + The 'package' argument is required when performing a relative import. It + specifies the package to use as the anchor point from which to resolve the + relative import to an absolute import. + + """ + if name.startswith('.'): + if not package: + raise TypeError("relative imports require the 'package' argument") + level = 0 + for character in name: + if character != '.': + break + level += 1 + name = _resolve_name(name[level:], package, level) + __import__(name) + return sys.modules[name] |
