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Add itertools.batched() #98363

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rhettinger opened this issue Oct 17, 2022 · 0 comments
Closed

Add itertools.batched() #98363

rhettinger opened this issue Oct 17, 2022 · 0 comments
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3.12 bugs and security fixes type-feature A feature request or enhancement

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rhettinger commented Oct 17, 2022 •
edited by bedevere-bot
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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
@rhettinger rhettinger added type-feature A feature request or enhancement 3.12 bugs and security fixes labels Oct 17, 2022
@rhettinger rhettinger self-assigned this Oct 17, 2022
@bedevere-bot bedevere-bot mentioned this issue Oct 17, 2022
Merged
rhettinger added a commit that referenced this issue Oct 17, 2022
@rhettinger
GH-98363: Add itertools.batched() (GH-98364)
de3ece7
@bedevere-bot bedevere-bot mentioned this issue Oct 18, 2022
Merged
rhettinger added a commit that referenced this issue Oct 20, 2022
@rhettinger
GH-98363: Presize the list for batched() (GH-98419)
c1e02d4
carljm added a commit to carljm/cpython that referenced this issue Oct 20, 2022
@carljm
Merge branch 'main' into typewatch
8bba5da 
* main: (40 commits)
  pythongh-98461: Fix source location in comprehensions bytecode (pythonGH-98464)
  pythongh-98421: Clean Up PyObject_Print (pythonGH-98422)
  pythongh-98360: multiprocessing now spawns children on Windows with correct argv[0] in virtual environments (pythonGH-98462)
  CODEOWNERS: Become a typing code owner (python#98480)
  [doc] Improve logging cookbook example. (pythonGH-98481)
  Add more tkinter.Canvas tests (pythonGH-98475)
  pythongh-95023: Added os.setns and os.unshare functions (python#95046)
  pythonGH-98363: Presize the list for batched() (pythonGH-98419)
  pythongh-98374: Suppress ImportError for invalid query for help() command. (pythongh-98450)
  typing tests: `_overload_dummy` raises `NotImplementedError`, not `RuntimeError` (python#98351)
  pythongh-98354: Add unicode check for 'name' attribute in _imp_create_builtin (pythonGH-98412)
  pythongh-98257: Make _PyEval_SetTrace() reentrant (python#98258)
  pythongh-98414: py.exe launcher does not use defaults for -V:company/ option (pythonGH-98460)
  pythongh-98417: Store int_max_str_digits on the Interpreter State (pythonGH-98418)
  Doc: Remove title text from internal links (python#98409)
  [doc] Refresh the venv introduction documentation, and correct the statement about VIRTUAL_ENV (pythonGH-98350)
  Docs: Bump sphinx-lint and fix unbalanced inline literal markup (python#98441)
  pythongh-92886: Replace assertion statements in `handlers.BaseHandler` to support running with optimizations (`-O`) (pythonGH-93231)
  pythongh-92886: Fix tests that fail when running with optimizations (`-O`) in `_test_multiprocessing.py` (pythonGH-93233)
  pythongh-92886: Fix tests that fail when running with optimizations (`-O`) in `test_py_compile.py` (pythonGH-93235)
  ...
@bedevere-bot bedevere-bot mentioned this issue Oct 21, 2022
Merged
rhettinger added a commit that referenced this issue Oct 21, 2022
@rhettinger
GH-98363: Fix exception handling in batched() (GH-98523)
a5ff80c
@bedevere-bot bedevere-bot mentioned this issue Oct 21, 2022
Merged
rhettinger added a commit that referenced this issue Oct 21, 2022
@rhettinger
GH-98363: Use better accessor macro (#98535)
8d57423
rhettinger added a commit to rhettinger/cpython that referenced this issue Oct 22, 2022
@rhettinger
pythonGH-98363: Slicing isn't necessary. A resize will suffice.
7c890ed
@bedevere-bot bedevere-bot mentioned this issue Oct 22, 2022
Merged
rhettinger added a commit that referenced this issue Oct 22, 2022
@rhettinger
GH-98363: Slicing isn't necessary. A size reduction will suffice. (GH…
5871e19 
…-98538)
@neutrinoceros neutrinoceros mentioned this issue Oct 22, 2022
Closed
@bedevere-bot bedevere-bot mentioned this issue Dec 8, 2022
Merged
rhettinger added a commit that referenced this issue Dec 8, 2022
@rhettinger
GH-98363: Have batched() return tuples (GH-100118)
35cc0ea
rhettinger added a commit to rhettinger/cpython that referenced this issue Dec 9, 2022
@rhettinger
pythonGH-98363: Shrink the physical size as well as the logical size
82c4d55
@bedevere-bot bedevere-bot mentioned this issue Dec 9, 2022
Merged
rhettinger added a commit that referenced this issue Dec 9, 2022
@rhettinger
GH-98363: Shrink the physical size as well as the logical size (GH-10…
8c21546 
…0138)
@bedevere-bot bedevere-bot mentioned this issue Dec 17, 2022
Merged
rhettinger added a commit that referenced this issue Dec 18, 2022
@rhettinger
[3.11] GH-98363: Update batched() recipe in docs to match 3.12 (#100323)
0918667
@rik rik mentioned this issue Apr 10, 2023
Closed
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