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21 lines
615 B
Python
21 lines
615 B
Python
"""`Singleton` providers example."""
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import dependency_injector.providers as providers
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class UserService(object):
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"""Example class UserService."""
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# Singleton provider creates new instance of specified class on first call and
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# returns same instance on every next call.
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users_service_provider = providers.Singleton(UserService)
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# Retrieving several UserService objects:
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user_service1 = users_service_provider()
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user_service2 = users_service_provider()
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# Making some asserts:
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assert user_service1 is user_service2
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assert isinstance(user_service1, UserService)
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assert isinstance(user_service2, UserService)
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