Description

rhettinger

opened on Oct 17, 2022

Issue body actions

This was requested on python-ideas:

  def batched(iterable, n):
      "Batch data into lists of length n. The last batch may be shorter."
      # batched('ABCDEFG', 3) --> ABC DEF G
      if n < 1:
          raise ValueError('n must be >= 1')
      it = iter(iterable)
      while (batch := list(islice(it, n))):
          yield batch

Linked PRs

• GH-98363: Have batched() return tuples #100118
• GH-98363: Shrink the physical size as well as the logical size #100138
• [3.11] GH-98363: Update batched() recipe in docs to match 3.12 #100323

Reacted by Rajarishi Devarajan, Sebastian Linke, Seyed Mahdi Moosavi, Alex Waygood, AmirSoroush, Furkan Onder, Andres G. Delannoy, Ivan Nazarov, Mike Nelhams, Bartosz Sławecki and 1 more

Reacted by Rickard Cardell, Alexander Overvoorde, Caleb Hattingh, Jonathan Striebel, f2koi, Mike Nelhams, Håkon V. Treider and Michael Maxwell

Activity

1. rhettinger

   added

   type-featureA feature request or enhancementA feature request or enhancement

   3.12only security fixesonly security fixes

   on Oct 17, 2022
2. rhettinger

   self-assigned this

   on Oct 17, 2022
3. rhettinger

   added a commit that references this issue on Oct 17, 2022

   GH-98363: Add itertools.batched() (GH-98364)

   de3ece7
4. rhettinger

   closed this as completedon Oct 17, 2022
5. rhettinger

   added a commit that references this issue on Oct 20, 2022

   GH-98363: Presize the list for batched() (GH-98419)

   c1e02d4
6. carljm

   added a commit that references this issue on Oct 20, 2022

   Merge branch 'main' into typewatch

   8bba5da
7. rhettinger

   added 4 commits that reference this issue on Oct 21, 2022

   GH-98363: Fix exception handling in batched() (GH-98523)

   a5ff80c

   GH-98363: Use better accessor macro (#98535)

   8d57423

   pythonGH-98363: Slicing isn't necessary. A resize will suffice.

   7c890ed

   GH-98363: Slicing isn't necessary. A size reduction will suffice. (GH…

   5871e19
8. rhettinger

   added 3 commits that reference this issue on Dec 8, 2022

   GH-98363: Have batched() return tuples (GH-100118)

   35cc0ea

   pythonGH-98363: Shrink the physical size as well as the logical size

   82c4d55

   GH-98363: Shrink the physical size as well as the logical size (GH-10…

   8c21546
9. rhettinger

   added a commit that references this issue on Dec 18, 2022

   [3.11] GH-98363: Update batched() recipe in docs to match 3.12 (#100323)

   0918667

Issue actions