taskcluster/taskgraph/util/python_path.py
author Carsten "Tomcat" Book <cbook@mozilla.com>
Wed, 20 Jul 2016 16:56:03 +0200
changeset 330980 f90a9f8af37c202842f5d9c5b2928004124ab5e1
parent 329467 2393f903d0a732960e73ae00489d0758d5f526f0
permissions -rw-r--r--
Merge mozilla-central to mozilla-inbound

# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

from __future__ import absolute_import, print_function, unicode_literals


def find_object(path):
    """
    Find a Python object given a path of the form <modulepath>:<objectpath>.
    Conceptually equivalent to

        def find_object(modulepath, objectpath):
            import <modulepath> as mod
            return mod.<objectpath>
    """
    if path.count(':') != 1:
        raise ValueError(
            'python path {!r} does not have the form "module:object"'.format(path))

    modulepath, objectpath = path.split(':')
    obj = __import__(modulepath)
    for a in modulepath.split('.')[1:]:
        obj = getattr(obj, a)
    for a in objectpath.split('.'):
        obj = getattr(obj, a)
    return obj