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| author | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2019-08-22 16:39:52 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <rhettinger@users.noreply.github.com> | 2019-08-22 16:39:52 (GMT) |
| commit | cb8de91dadf15925fb95069cb190398e1d485f56 (patch) | |
| tree | 79ea0c0e4157bff40303c975aa237f3e5788cebb /Doc/tutorial | |
| parent | 2878f378e02990303a8fe4bedd5386bd90efc26d (diff) | |
| download | cpython-cb8de91dadf15925fb95069cb190398e1d485f56.zip cpython-cb8de91dadf15925fb95069cb190398e1d485f56.tar.gz cpython-cb8de91dadf15925fb95069cb190398e1d485f56.tar.bz2 | |
bpo-14050: Note that not all data can be sorted (GH-15381) (GH-15395)
(cherry picked from commit 4109263a7edce11194e301138cf66fa2d07f7ce4)
Co-authored-by: Raymond Hettinger <rhettinger@users.noreply.github.com>
Diffstat (limited to 'Doc/tutorial')
| -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: |