def load_class(class_name: str, module_name: str):
if class_name is None:
raise TypeError("class_name must not be None")
if not isinstance(class_name, str):
raise TypeError("class_name must be a string")
if module_name is None:
raise TypeError("module_name must not be None")
if not isinstance(module_name, str):
raise TypeError("module_name must be a string")
try:
verify_dynamic_loading_support(module_name=module_name)
except FileNotFoundError:
raise PluginModuleNotFoundError(module_name)
module_obj: Optional[ModuleType] = import_library_module(
module_name=module_name)
if module_obj is None:
raise PluginModuleNotFoundError(module_name)
try:
klass_ = getattr(module_obj, class_name)
except AttributeError:
raise PluginClassNotFoundError(module_name=module_name,
class_name=class_name)
return klass_
def load_class(class_name, module_name):
try:
verify_dynamic_loading_support(module_name=module_name)
except FileNotFoundError:
raise PluginModuleNotFoundError(module_name)
module_obj: Union[ModuleType, None] = import_library_module(module_name=module_name)
if module_obj is None:
raise PluginModuleNotFoundError(module_name)
try:
klass_ = getattr(module_obj, class_name)
except AttributeError:
raise PluginClassNotFoundError(module_name=module_name, class_name=class_name)
return klass_
def load_class(class_name, module_name):
"""Dynamically load a class from strings or raise a helpful error."""
try:
loaded_module = importlib.import_module(module_name)
class_ = getattr(loaded_module, class_name)
except ModuleNotFoundError:
raise PluginModuleNotFoundError(module_name)
except AttributeError:
raise PluginClassNotFoundError(module_name=module_name, class_name=class_name)
return class_
def load_class(class_name, module_name):
"""Dynamically load a class from strings or raise a helpful error."""
# TODO remove this nasty python 2 hack
try:
ModuleNotFoundError
except NameError:
ModuleNotFoundError = ImportError
try:
loaded_module = importlib.import_module(module_name)
class_ = getattr(loaded_module, class_name)
except ModuleNotFoundError as e:
raise PluginModuleNotFoundError(module_name=module_name)
except AttributeError as e:
raise PluginClassNotFoundError(module_name=module_name,
class_name=class_name)
return class_
