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#1228: new comparison behavior.

This commit is contained in:
Georg Brandl 2007-10-08 14:08:36 +00:00
parent 9f27df56f8
commit 9f2c39a775
1 changed files with 5 additions and 12 deletions
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Doc/tutorial/datastructures.rst
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@ -560,15 +560,8 @@ sequences of the same type::
(1, 2, 3) == (1.0, 2.0, 3.0)
(1, 2, ('aa', 'ab')) < (1, 2, ('abc', 'a'), 4)
Note that comparing objects of different types is legal. The outcome is
deterministic but arbitrary: the types are ordered by their name. Thus, a list
is always smaller than a string, a string is always smaller than a tuple, etc.
[#]_ Mixed numeric types are compared according to their numeric value, so 0
equals 0.0, etc.
.. rubric:: Footnotes
.. [#] The rules for comparing objects of different types should not be relied upon;
they may change in a future version of the language.
Note that comparing objects of different types with ``<`` or ``>`` is legal
provided that the objects have appropriate comparison methods. For example,
mixed numeric types are compared according to their numeric value, so 0 equals
0.0, etc. Otherwise, rather than providing an arbitrary ordering, the
interpreter will raise a :exc:`TypeError` exception.