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24 lines
957 B
ReStructuredText
24 lines
957 B
ReStructuredText
Container copying
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-----------------
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You can create declarative container copies using ``@containers.copy()`` decorator.
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.. literalinclude:: ../../examples/containers/declarative_copy_decorator1.py
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:language: python
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:lines: 3-
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:emphasize-lines: 18-22
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Decorator ``@containers.copy()`` copies providers from source container to destination container.
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Destination container provider will replace source provider, if names match.
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Decorator ``@containers.copy()`` helps you when you create derived declarative containers
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from the base one. Base container often keeps default dependencies while derived containers define
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overriding providers. Without ``@containers.copy()`` decorator, overridden providers are available
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in the derived container, but base class dependencies continue to be bound to the base class providers.
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.. literalinclude:: ../../examples/containers/declarative_copy_decorator2.py
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:language: python
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:lines: 11-
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.. disqus::
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