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PEP 509: be more explicit on when the version is incremented or not

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Victor Stinner 2016-01-12 00:19:28 +01:00
parent 04b7e969a2
commit a19233d285
1 changed files with 4 additions and 3 deletions
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pep-0509.txt
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@ -153,9 +153,10 @@ initilized to version ``0``. The version is incremented at each change:
* ``setdefault(key, value)`` if the `key` does not exist * ``setdefault(key, value)`` if the `key` does not exist
* ``__detitem__(key)`` if the key exists * ``__detitem__(key)`` if the key exists
* ``__setitem__(key, value)`` if the `key` doesn't exist or if the value * ``__setitem__(key, value)`` if the `key` doesn't exist or if the value
is different is not ``dict[key]``
* ``update(...)`` if new values are different than existing values (the * ``update(...)`` if new values are different than existing values:
version can be incremented multiple times) values are compared by identity, not by their content; the version can
be incremented multiple times
Example using an hypothetical ``dict_get_version(dict)`` function:: Example using an hypothetical ``dict_get_version(dict)`` function::