Python imp 模块，find_module() 实例源码

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def loadModule(filename):
    if filename == '':
        raise RuntimeError, 'Empty filename cannot be loaded'
    print "Loading module %s" % (filename)
    searchPath, file = os.path.split(filename)
    if not searchPath in sys.path: 
        sys.path.append(searchPath)
        sys.path.append(os.path.normpath(searchPath+"/../"))
    moduleName, ext = os.path.splitext(file)
    fp, pathName, description = imp.find_module(moduleName, [searchPath,])

    try:
        module = imp.load_module(moduleName, fp, pathName, description)
    finally:
        if fp:
            fp.close()

    return module

def import_it(self, partname, fqname, parent, force_load=0):
        if not partname:
            # completely empty module name should only happen in
            # 'from . import' or __import__("")
            return parent
        if not force_load:
            try:
                return self.modules[fqname]
            except KeyError:
                pass
        try:
            path = parent and parent.__path__
        except AttributeError:
            return None
        partname = str(partname)
        stuff = self.loader.find_module(partname, path)
        if not stuff:
            return None
        fqname = str(fqname)
        m = self.loader.load_module(fqname, stuff)
        if parent:
            setattr(parent, partname, m)
        return m

def load_package(self, fqname, pathname):
        self.msgin(2, "load_package", fqname, pathname)
        newname = replacePackageMap.get(fqname)
        if newname:
            fqname = newname
        m = self.add_module(fqname)
        m.__file__ = pathname
        m.__path__ = [pathname]

        # As per comment at top of file, simulate runtime __path__ additions.
        m.__path__ = m.__path__ + packagePathMap.get(fqname, [])

        fp, buf, stuff = self.find_module("__init__", m.__path__)
        self.load_module(fqname, fp, buf, stuff)
        self.msgout(2, "load_package ->", m)
        return m

def find_module(self, name, path, parent=None):
        if parent is not None:
            # assert path is not None
            fullname = parent.__name__+'.'+name
        else:
            fullname = name
        if fullname in self.excludes:
            self.msgout(3, "find_module -> Excluded", fullname)
            raise ImportError, name

        if path is None:
            if name in sys.builtin_module_names:
                return (None, None, ("", "", imp.C_BUILTIN))

            path = self.path
        return imp.find_module(name, path)

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix,mode,kind) = info = imp.find_module(part, paths)

        if kind==PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts,module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix,mode,kind) = info = imp.find_module(part, paths)

        if kind==PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts,module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix,mode,kind) = info = imp.find_module(part, paths)

        if kind==PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts,module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix,mode,kind) = info = imp.find_module(part, paths)

        if kind==PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts,module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def install_other(subdir):
    cwd = os.getcwd()
    path = os.path.join(cwd, subdir)

    try:
        os.chdir(path)
    except OSError, error:
        if error.errno not in (errno.ENOENT, errno.ENOTDIR):
            raise
        print >> sys.stderr, "Could not find directory %r" % path
        return

    try:
        module_info = imp.find_module("setup", ["."])
        imp.load_module("setup", *module_info)
    finally:
        os.chdir(cwd)

def get(prop):
    db_type = name()
    modname = 'trytond.backend.%s' % db_type
    if modname not in sys.modules:
        try:
            __import__(modname)
        except ImportError:
            if not pkg_resources:
                raise
            ep, = pkg_resources.iter_entry_points('trytond.backend', db_type)
            mod_path = os.path.join(ep.dist.location,
                *ep.module_name.split('.')[:-1])
            fp, pathname, description = imp.find_module(db_type, [mod_path])
            imp.load_module(modname, fp, pathname, description)
    module = sys.modules[modname]
    return getattr(module, prop)

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix,mode,kind) = info = imp.find_module(part, paths)

        if kind==PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts,module))

    return info

def import_module(name):
    name = os.path.realpath(name)
    thepath = os.path.dirname(name)
    name = os.path.basename(name)
    if name.endswith(".py"):
        name = name[:-3]
    f,path,desc = imp.find_module(name,[thepath])

    try:
        return imp.load_module(name, f, path, desc)
    finally:
        if f:
            f.close()


#### INTERNAL/EXTERNAL FILE EMBEDDING ####

def import_module(name):
    name = os.path.realpath(name)
    thepath = os.path.dirname(name)
    name = os.path.basename(name)
    if name.endswith(".py"):
        name = name[:-3]
    f,path,desc = imp.find_module(name,[thepath])

    try:
        return imp.load_module(name, f, path, desc)
    finally:
        if f:
            f.close()


#### INTERNAL/EXTERNAL FILE EMBEDDING ####

def load_package(self, fqname, pathname):
        self.msgin(2, "load_package", fqname, pathname)
        newname = replacePackageMap.get(fqname)
        if newname:
            fqname = newname
        m = self.add_module(fqname)
        m.__file__ = pathname
        m.__path__ = [pathname]

        # As per comment at top of file, simulate runtime __path__ additions.
        m.__path__ = m.__path__ + packagePathMap.get(fqname, [])

        fp, buf, stuff = self.find_module("__init__", m.__path__)
        self.load_module(fqname, fp, buf, stuff)
        self.msgout(2, "load_package ->", m)
        return m

def find_module(self, name, path, parent=None):
        if parent is not None:
            # assert path is not None
            fullname = parent.__name__+'.'+name
        else:
            fullname = name
        if fullname in self.excludes:
            self.msgout(3, "find_module -> Excluded", fullname)
            raise ImportError, name

        if path is None:
            if name in sys.builtin_module_names:
                return (None, None, ("", "", imp.C_BUILTIN))

            path = self.path
        return imp.find_module(name, path)

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def check_packages(str_package):
    """ Checks if the specified python package is installed.
    return type: boolean

    :Arguments:

    1. str_package (str) = name of the package to be checked

    :Returns:

    bool = True/False

    """
    try:
        imp.find_module(str_package)
        bool_found = True
    except ImportError:
        bool_found = False
    return bool_found

def _find_module_path(module_name, mod_path=None):
    """Recursively find the module path. ImportError will
    be raised if the module cannot be found.
    """
    parts = module_name.split(".")

    find_args = [parts[0]]
    if mod_path is not None:
        find_args.append([mod_path])

    file_,mod_path,desc = imp.find_module(*find_args)

    if len(parts) > 1:
        return _find_module_path(".".join(parts[1:]), mod_path)

    return mod_path

def import_module(name):
    name = os.path.realpath(name)
    thepath = os.path.dirname(name)
    name = os.path.basename(name)
    if name.endswith(".py"):
        name = name[:-3]
    f,path,desc = imp.find_module(name,[thepath])

    try:
        return imp.load_module(name, f, path, desc)
    finally:
        if f:
            f.close()


#### INTERNAL/EXTERNAL FILE EMBEDDING ####

def reload(self, module, pdata):
        """
        Reloads modules that might not be in the path.
        """
        try:
            import imp
            fp, pathname, description = imp.find_module(pdata.mod_name, [pdata.fpath])
            try:
                module = imp.load_module(pdata.mod_name, fp, pathname,description)
            finally:
                if fp:
                    fp.close()
        except:
            if pdata.mod_name in sys.modules:
                del sys.modules[pdata.mod_name]
            module = self.import_plugin(pdata)
        return module

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix,mode,kind) = info = imp.find_module(part, paths)

        if kind==PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts,module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def _check_if_pyc(fname):
    """Return True if the extension is .pyc, False if .py
    and None if otherwise"""
    from imp import find_module
    from os.path import realpath, dirname, basename, splitext

    # Normalize the file-path for the find_module()
    filepath = realpath(fname)
    dirpath = dirname(filepath)
    module_name = splitext(basename(filepath))[0]

    # Validate and fetch
    try:
        fileobj, fullpath, (_, _, pytype) = find_module(module_name, [dirpath])
    except ImportError:
        raise IOError("Cannot find config file. "
                      "Path maybe incorrect! : {0}".format(filepath))
    return pytype, fileobj, fullpath

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix,mode,kind) = info = imp.find_module(part, paths)

        if kind==PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts,module))

    return info

def get_visualizer_module(name):
    # try to import the specified visualization module:
    visualizer_path = os.path.join(options.cfg.base_path, "visualizer")
    try:
        find = imp.find_module(name, [visualizer_path])
        module = imp.load_module(name, *find)
        return module
    except Exception as e:
        print(e)
        msg = "<code style='color: darkred'>{type}: {code}</code>".format(
            type=type(e).__name__, code=sys.exc_info()[1])
        logger.error(msg)
        QtWidgets.QMessageBox.critical(
            None, "Visualization error – Coquery",
            VisualizationModuleError(name, msg).error_message)
        return None

def find_module(self, fullname, path=None):
        logger.debug('Running find_module: {0}...'.format(fullname))
        if '.' in fullname:
            parent, child = fullname.rsplit('.', 1)
            if path is None:
                loader = self.find_module(parent, path)
                mod = loader.load_module(parent)
                path = mod.__path__
            fullname = child

        # Perhaps we should try using the new importlib functionality in Python
        # 3.3: something like this?
        # thing = importlib.machinery.PathFinder.find_module(fullname, path)
        try:
            self.found = imp.find_module(fullname, path)
        except Exception as e:
            logger.debug('Py2Fixer could not find {0}')
            logger.debug('Exception was: {0})'.format(fullname, e))
            return None
        self.kind = self.found[-1][-1]
        if self.kind == imp.PKG_DIRECTORY:
            self.pathname = os.path.join(self.found[1], '__init__.py')
        elif self.kind == imp.PY_SOURCE:
            self.pathname = self.found[1]
        return self

def _find_and_load_module(self, name, path=None):
        """
        Finds and loads it. But if there's a . in the name, handles it
        properly.
        """
        bits = name.split('.')
        while len(bits) > 1:
            # Treat the first bit as a package
            packagename = bits.pop(0)
            package = self._find_and_load_module(packagename, path)
            try:
                path = package.__path__
            except AttributeError:
                # This could be e.g. moves.
                flog.debug('Package {0} has no __path__.'.format(package))
                if name in sys.modules:
                    return sys.modules[name]
                flog.debug('What to do here?')

        name = bits[0]
        module_info = imp.find_module(name, path)
        return imp.load_module(name, *module_info)

def import_module(name):
    name = os.path.realpath(name)
    thepath = os.path.dirname(name)
    name = os.path.basename(name)
    if name.endswith(".py"):
        name = name[:-3]
    f,path,desc = imp.find_module(name,[thepath])

    try:
        return imp.load_module(name, f, path, desc)
    finally:
        if f:
            f.close()


#### INTERNAL/EXTERNAL FILE EMBEDDING ####

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def test_examples():

    examples_pat = os.path.join(os.path.abspath(os.path.dirname(__file__)),
                                '../../examples/*/*.py')

    # Filter out __init__.py
    examples = [f for f in glob.glob(examples_pat)
                if not any([x in f for x in ['__init__.py',
                                             'molecular']])]
    for e in examples:
        example_dir = os.path.dirname(e)
        sys.path.insert(0, example_dir)
        (module_name, _) = os.path.splitext(os.path.basename(e))
        (module_file, module_path, desc) = \
            imp.find_module(module_name, [example_dir])

        m = imp.load_module(module_name, module_file, module_path, desc)

        if hasattr(m, 'main'):
            m.main(debug=False)

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix,mode,kind) = info = imp.find_module(part, paths)

        if kind==PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts,module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def load_plugins(logger, plugins, pluginpath):
    def load_plugin(name):
        logger.debug('Loading plugin %s' % name)
        fp, pathname, description = imp.find_module(name, [pluginpath])
        try:
            return imp.load_module(name, fp, pathname, description)
        finally:
            if fp:
                fp.close()

    logger.debug('Loading plugins from %s...' % pluginpath)

    expanded = (glob.glob(os.path.join(pluginpath, '*' + ext))
                for ext in python_extensions)
    files = itertools.chain.from_iterable(expanded)
    names = set(os.path.splitext(os.path.basename(fn))[0] for fn in files)
    for name in names:
        if name != '__init__':
            plugin = load_plugin(name)
            if hasattr(plugin, 'plugin_init'):
                obj = plugin.plugin_init(plugins)
                plugins.append(obj or plugin)
            else:
                plugins.append(plugin)

def load(modname):
    """ Loads all the modules that are named 'modname' from all the installed applications. """

    def _get_module(app, modname):
        # Find out the app's __path__
        try:
            app_path = import_module(app).__path__
        except AttributeError:  # pragma: no cover
            return

        # Use imp.find_module to find the app's modname.py
        try:
            imp.find_module(modname, app_path)
        except ImportError:  # pragma: no cover
            return

        # Import the app's module file
        import_module('{}.{}'.format(app, modname))

    for app in settings.INSTALLED_APPS:
        _get_module(app, modname)

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def find_module(module, paths=None):
    """Just like 'imp.find_module()', but with package support"""

    parts = module.split('.')

    while parts:
        part = parts.pop(0)
        f, path, (suffix, mode, kind) = info = imp.find_module(part, paths)

        if kind == PKG_DIRECTORY:
            parts = parts or ['__init__']
            paths = [path]

        elif parts:
            raise ImportError("Can't find %r in %s" % (parts, module))

    return info

def get_version(self, paths=None, default="unknown"):
        """Get version number of installed module, 'None', or 'default'

        Search 'paths' for module.  If not found, return 'None'.  If found,
        return the extracted version attribute, or 'default' if no version
        attribute was specified, or the value cannot be determined without
        importing the module.  The version is formatted according to the
        requirement's version format (if any), unless it is 'None' or the
        supplied 'default'.
        """

        if self.attribute is None:
            try:
                f, p, i = find_module(self.module, paths)
                if f:
                    f.close()
                return default
            except ImportError:
                return None

        v = get_module_constant(self.module, self.attribute, default, paths)

        if v is not None and v is not default and self.format is not None:
            return self.format(v)

        return v