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| author | Raymond Hettinger <rhettinger@users.noreply.github.com> | 2019-08-22 16:11:35 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-08-22 16:11:35 (GMT) |
| commit | 4109263a7edce11194e301138cf66fa2d07f7ce4 (patch) | |
| tree | 8768d0eaeb67cca6105b5f2910178dbbfa8a98fd | |
| parent | a38e9d139929a227e3899fbb638bc46c6cc6d8ba (diff) | |
| download | cpython-4109263a7edce11194e301138cf66fa2d07f7ce4.zip cpython-4109263a7edce11194e301138cf66fa2d07f7ce4.tar.gz cpython-4109263a7edce11194e301138cf66fa2d07f7ce4.tar.bz2 | |
bpo-14050: Note that not all data can be sorted (GH-15381)
| -rw-r--r-- | Doc/tutorial/datastructures.rst | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Doc/tutorial/datastructures.rst b/Doc/tutorial/datastructures.rst index 01e437b..a0d5627 100644 --- a/Doc/tutorial/datastructures.rst +++ b/Doc/tutorial/datastructures.rst @@ -125,6 +125,13 @@ only modify the list have no return value printed -- they return the default ``None``. [1]_ This is a design principle for all mutable data structures in Python. +Another thing you might notice is that not all data can be sorted or +compared. For instance, ``[None, 'hello', 10]`` doesn't sort because +integers can't be compared to strings and *None* can't be compared to +other types. Also, there are some types that don't have a defined +ordering relation. For example, ``3+4j < 5+7j`` isn't a valid +comparison. + .. _tut-lists-as-stacks: |