Message201019
The help text for the len() built-in function says:
Return the number of items of a sequence or mapping.
This omits to mention that len() works on sets too. I suggest this be changed to:
Return the number of items of a sequence, mapping, or set.
Similarly, the documentation for len() says:
The argument may be a sequence (string, tuple or list) or a mapping (dictionary).
I suggest this be changed to
The argument may be a sequence (string, tuple or list), a mapping (dictionary), or a set.
(Of course, strictly speaking, len() accepts any object with a __len__ method, but sequences, mappings and sets are the ones that are built-in to the Python core, and so these are the ones it is important to mention in the help and the documentation.) |
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Date |
User |
Action |
Args |
2013-10-23 12:22:08 | gdr@garethrees.org | set | recipients:
+ gdr@garethrees.org, docs@python |
2013-10-23 12:22:08 | gdr@garethrees.org | set | messageid: <1382530928.74.0.685857253341.issue19362@psf.upfronthosting.co.za> |
2013-10-23 12:22:08 | gdr@garethrees.org | link | issue19362 messages |
2013-10-23 12:22:08 | gdr@garethrees.org | create | |
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