1945b12769
* fix: run formatter black and isort * fix: linting, pydocstyle, xsslint and security issues
46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
"""A module proxy for delayed importing of modules.
|
|
|
|
From http://barnesc.blogspot.com/2006/06/automatic-python-imports-with-autoimp.html,
|
|
in the public domain.
|
|
|
|
"""
|
|
|
|
import sys
|
|
|
|
|
|
class LazyModule(object):
|
|
"""A lazy module proxy."""
|
|
|
|
def __init__(self, modname):
|
|
self.__dict__["__name__"] = modname
|
|
self._set_mod(None)
|
|
|
|
def _set_mod(self, mod):
|
|
if mod is not None:
|
|
self.__dict__ = mod.__dict__
|
|
self.__dict__["_lazymod_mod"] = mod
|
|
|
|
def _load_mod(self):
|
|
__import__(self.__name__)
|
|
self._set_mod(sys.modules[self.__name__])
|
|
|
|
def __getattr__(self, name):
|
|
if self.__dict__["_lazymod_mod"] is None:
|
|
self._load_mod()
|
|
|
|
mod = self.__dict__["_lazymod_mod"]
|
|
|
|
if hasattr(mod, name):
|
|
return getattr(mod, name)
|
|
else:
|
|
try:
|
|
subname = "%s.%s" % (self.__name__, name)
|
|
__import__(subname)
|
|
submod = getattr(mod, name) # lint-amnesty, pylint: disable=unused-variable
|
|
except ImportError:
|
|
raise AttributeError( # lint-amnesty, pylint: disable=raise-missing-from
|
|
"'module' object has no attribute %r" % name
|
|
)
|
|
self.__dict__[name] = LazyModule(subname)
|
|
return self.__dict__[name]
|