33 lines
839 B
Python
33 lines
839 B
Python
"""
|
|
Catalog module.
|
|
"""
|
|
|
|
from .providers import Provider
|
|
|
|
|
|
class Catalog(object):
|
|
"""
|
|
Object provides catalog.
|
|
"""
|
|
|
|
def __init__(self, *used_providers):
|
|
"""
|
|
Initializer.
|
|
"""
|
|
self._clean_unused_providers(used_providers)
|
|
|
|
def _clean_unused_providers(self, used_providers):
|
|
"""
|
|
Sets every catalog's provider in None except of `used_providers` list.
|
|
|
|
:param list|tuple|set used_providers:
|
|
:return:
|
|
"""
|
|
used_providers = set(used_providers)
|
|
for attribute_name in set(dir(self.__class__)) - set(dir(Catalog)):
|
|
provider = getattr(self, attribute_name)
|
|
if not isinstance(provider, Provider):
|
|
continue
|
|
if provider not in used_providers:
|
|
setattr(self, attribute_name, None)
|