Python pkgutil 模块，extend_path() 实例源码

def test_nested(self):
        pkgutil_boilerplate = (
            'import pkgutil; '
            '__path__ = pkgutil.extend_path(__path__, __name__)')
        self.create_module('a.pkg.__init__', pkgutil_boilerplate)
        self.create_module('b.pkg.__init__', pkgutil_boilerplate)
        self.create_module('a.pkg.subpkg.__init__', pkgutil_boilerplate)
        self.create_module('b.pkg.subpkg.__init__', pkgutil_boilerplate)
        self.create_module('a.pkg.subpkg.c', 'c = 1')
        self.create_module('b.pkg.subpkg.d', 'd = 2')
        sys.path.insert(0, os.path.join(self.basedir, 'a'))
        sys.path.insert(0, os.path.join(self.basedir, 'b'))
        import pkg
        self.addCleanup(unload, 'pkg')
        self.assertEqual(len(pkg.__path__), 2)
        import pkg.subpkg
        self.addCleanup(unload, 'pkg.subpkg')
        self.assertEqual(len(pkg.subpkg.__path__), 2)
        from pkg.subpkg.c import c
        from pkg.subpkg.d import d
        self.assertEqual(c, 1)
        self.assertEqual(d, 2)

def test_nested(self):
        pkgutil_boilerplate = (
            'import pkgutil; '
            '__path__ = pkgutil.extend_path(__path__, __name__)')
        self.create_module('a.pkg.__init__', pkgutil_boilerplate)
        self.create_module('b.pkg.__init__', pkgutil_boilerplate)
        self.create_module('a.pkg.subpkg.__init__', pkgutil_boilerplate)
        self.create_module('b.pkg.subpkg.__init__', pkgutil_boilerplate)
        self.create_module('a.pkg.subpkg.c', 'c = 1')
        self.create_module('b.pkg.subpkg.d', 'd = 2')
        sys.path.insert(0, os.path.join(self.basedir, 'a'))
        sys.path.insert(0, os.path.join(self.basedir, 'b'))
        import pkg
        self.addCleanup(unload, 'pkg')
        self.assertEqual(len(pkg.__path__), 2)
        import pkg.subpkg
        self.addCleanup(unload, 'pkg.subpkg')
        self.assertEqual(len(pkg.subpkg.__path__), 2)
        from pkg.subpkg.c import c
        from pkg.subpkg.d import d
        self.assertEqual(c, 1)
        self.assertEqual(d, 2)

def test_nested(self):
        pkgutil_boilerplate = (
            'import pkgutil; '
            '__path__ = pkgutil.extend_path(__path__, __name__)')
        self.create_module('a.pkg.__init__', pkgutil_boilerplate)
        self.create_module('b.pkg.__init__', pkgutil_boilerplate)
        self.create_module('a.pkg.subpkg.__init__', pkgutil_boilerplate)
        self.create_module('b.pkg.subpkg.__init__', pkgutil_boilerplate)
        self.create_module('a.pkg.subpkg.c', 'c = 1')
        self.create_module('b.pkg.subpkg.d', 'd = 2')
        sys.path.insert(0, os.path.join(self.basedir, 'a'))
        sys.path.insert(0, os.path.join(self.basedir, 'b'))
        import pkg
        self.addCleanup(unload, 'pkg')
        self.assertEqual(len(pkg.__path__), 2)
        import pkg.subpkg
        self.addCleanup(unload, 'pkg.subpkg')
        self.assertEqual(len(pkg.subpkg.__path__), 2)
        from pkg.subpkg.c import c
        from pkg.subpkg.d import d
        self.assertEqual(c, 1)
        self.assertEqual(d, 2)

def patchAndroid():
    if os.path.exists('/storage/external_storage/') or os.path.exists('/storage/emulated/'): #patch for Android only
        zopePath=xbmc.translatePath('special://home/addons/script.module.zope.interface/lib/zope/')
        myLog('patchAndroid > found common Android paths, patching %s' % zopePath)
        if not os.path.exists(zopePath + "__init__.py.org") and os.path.exists(zopePath + "__init__.py"):
            os.rename(zopePath + "__init__.py", zopePath + "__init__.py.org")
            with open(zopePath + "__init__.py", 'w') as f:
                f.write("""# this is a namespace package patched by j00zek
try:
    from pkg_resources import declare_namespace
    declare_namespace(__name__)
except ImportError:
    import pkgutil
    __path__ = pkgutil.extend_path(__path__, __name__)
""")
                f.close()
                if os.path.exists(zopePath + "__init__.pyo"):
                    os.remove(zopePath + "__init__.pyo")
    else:
        myLog('patchAndroid > common Android paths not found, is it Android?')

def create_init(self, pkgname):
        dirname = tempfile.mkdtemp()
        sys.path.insert(0, dirname)

        pkgdir = os.path.join(dirname, pkgname)
        os.mkdir(pkgdir)
        with open(os.path.join(pkgdir, '__init__.py'), 'w') as fl:
            fl.write('from pkgutil import extend_path\n__path__ = extend_path(__path__, __name__)\n')

        return dirname

def create_init(self, pkgname):
        dirname = tempfile.mkdtemp()
        sys.path.insert(0, dirname)

        pkgdir = os.path.join(dirname, pkgname)
        os.mkdir(pkgdir)
        with open(os.path.join(pkgdir, '__init__.py'), 'w') as fl:
            fl.write('from pkgutil import extend_path\n__path__ = extend_path(__path__, __name__)\n')

        return dirname

def component_loader(__path__, __name__):
    """
    Loads classes from subdirectories of a given module.
    """
    __path__ = pkgutil.extend_path(__path__, __name__)

    for importer, module_name, ispkg in pkgutil.walk_packages(path=__path__, prefix=__name__+'.'):
        importlib.import_module(module_name)

def create_init(self, pkgname):
        dirname = tempfile.mkdtemp()
        sys.path.insert(0, dirname)

        pkgdir = os.path.join(dirname, pkgname)
        os.mkdir(pkgdir)
        with open(os.path.join(pkgdir, '__init__.py'), 'w') as fl:
            fl.write('from pkgutil import extend_path\n__path__ = extend_path(__path__, __name__)\n')

        return dirname

def ExtendPath(self):
        self.path = pkgutil.extend_path(self.path, self.name)
        if self.parent is not None:
            self.parent.ExtendPath()