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Explicitly state that the default implementation is registered for `object` 

Thanks to Gustavo Carneiro for the suggestion.
This commit is contained in:
Łukasz Langa 2013-05-31 12:31:11 +02:00
parent b8e9268074
commit 82261fe5e1
1 changed files with 7 additions and 3 deletions
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10
pep-0443.txt
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@ -134,13 +134,17 @@ argument::
Where there is no registered implementation for a specific type, its
method resolution order is used to find a more generic implementation.
The original function decorated with ``@singledispatch`` is registered
for the base ``object`` type, which means it is used if no better
implementation is found.
To check which implementation will the generic function choose for
a given type, use the ``dispatch()`` attribute::
>>> fun.dispatch(float)
<function fun_num at 0x104319058>
>>> fun.dispatch(dict)
<function fun at 0x103fe4788>
>>> fun.dispatch(dict) # note: default implementation
<function fun at 0x103fe0000>
To access all registered implementations, use the read-only ``registry``
attribute::
@ -152,7 +156,7 @@ attribute::
>>> fun.registry[float]
<function fun_num at 0x1035a2840>
>>> fun.registry[object]
<function fun at 0x103170788>
<function fun at 0x103fe0000>
The proposed API is intentionally limited and opinionated, as to ensure
it is easy to explain and use, as well as to maintain consistency with