gh-120526: Correct signature of map builtin by AdamWill · Pull Request #120528 · python/cpython · GitHub

map requires at least one iterable arg. If you just do map(map) you get an error "map() must have at least two arguments." This corrects the signature to reflect this, in line with how it's shown in https://docs.python.org/3/library/functions.html#map .

Issue: inspect.signature(map) works in Python 3.13, but gives a signature that looks like only one arg is required #120526

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map requires at least one iterable arg. If you just do `map(map)` you get an error "map() must have at least two arguments." This corrects the signature to reflect this, in line with how it's shown in https://docs.python.org/3/library/functions.html#map . Signed-off-by: Adam Williamson <awilliam@redhat.com>

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If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

LGTM.

Thanks @AdamWill for the PR, and @serhiy-storchaka for merging it 🌮🎉.. I'm working now to backport this PR to: 3.13.
🐍🍒⛏🤖

map() requires at least one iterable arg. (cherry picked from commit d4039d3) Co-authored-by: Adam Williamson <adam@blueradius.ca> Signed-off-by: Adam Williamson <awilliam@redhat.com>

GH-120539 is a backport of this pull request to the 3.13 branch.

…120539) map() requires at least one iterable arg. (cherry picked from commit d4039d3) Signed-off-by: Adam Williamson <awilliam@redhat.com> Co-authored-by: Adam Williamson <adam@blueradius.ca>

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Fedora Stable Clang Installed 3.x has failed when building commit d4039d3.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/350/builds/6135) and take a look at the build logs.
Check if the failure is related to this commit (d4039d3) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

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Summary of the results of the build (if available):

Click to see traceback logs

remote: Enumerating objects: 4, done.        
remote: Counting objects:  25% (1/4)        
remote: Counting objects:  50% (2/4)        
remote: Counting objects:  75% (3/4)        
remote: Counting objects: 100% (4/4)        
remote: Counting objects: 100% (4/4), done.        
remote: Compressing objects:  33% (1/3)        
remote: Compressing objects:  66% (2/3)        
remote: Compressing objects: 100% (3/3)        
remote: Compressing objects: 100% (3/3), done.        
remote: Total 4 (delta 1), reused 1 (delta 1), pack-reused 0        
From https://github.com/python/cpython
 * branch                  main       -> FETCH_HEAD
Note: switching to 'd4039d3f6f8cb7738c5cd272dde04171446dfd2b'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at d4039d3f6f gh-120526: Correct signature of map() builtin (GH-120528)
Switched to and reset branch 'main'

configure: WARNING: no system libmpdecimal found; falling back to bundled libmpdecimal (deprecated and scheduled for removal in Python 3.15)

Python/import.c:1555:1: warning: unused function 'is_core_module' [-Wunused-function]
 1555 | is_core_module(PyInterpreterState *interp, PyObject *name, PyObject *path)
      | ^~~~~~~~~~~~~~
1 warning generated.
Python/pystate.c:1135:1: warning: unused function 'check_interpreter_whence' [-Wunused-function]
 1135 | check_interpreter_whence(long whence)
      | ^~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.

ERROR: Could not install packages due to an OSError: [Errno 28] No space left on device

Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-x86_64.clang-installed/build/Lib/ensurepip/__main__.py", line 5, in <module>
    sys.exit(ensurepip._main())
             ~~~~~~~~~~~~~~~^^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-x86_64.clang-installed/build/Lib/ensurepip/__init__.py", line 257, in _main
    return _bootstrap(
        root=args.root,
    ...<4 lines>...
        default_pip=args.default_pip,
    )
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-x86_64.clang-installed/build/Lib/ensurepip/__init__.py", line 172, in _bootstrap
    return _run_pip([*args, "pip"], [os.fsdecode(tmp_wheel_path)])
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-x86_64.clang-installed/build/Lib/ensurepip/__init__.py", line 87, in _run_pip
    return subprocess.run(cmd, check=True).returncode
           ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/home/buildbot/buildarea/3.x.cstratak-fedora-stable-x86_64.clang-installed/build/Lib/subprocess.py", line 577, in run
    raise CalledProcessError(retcode, process.args,
                             output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['/home/buildbot/buildarea/3.x.cstratak-fedora-stable-x86_64.clang-installed/build/python', '-W', 'ignore::DeprecationWarning', '-c', '\nimport runpy\nimport sys\nsys.path = [\'/tmp/tmp9_2n5m4z/pip-24.0-py3-none-any.whl\'] + sys.path\nsys.argv[1:] = [\'install\', \'--no-cache-dir\', \'--no-index\', \'--find-links\', \'/tmp/tmp9_2n5m4z\', \'--root\', \'/\', \'--upgrade\', \'pip\']\nrunpy.run_module("pip", run_name="__main__", alter_sys=True)\n']' returned non-zero exit status 1.
make: *** [Makefile:2282: install] Error 1

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Windows11 Bigmem 3.x has failed when building commit d4039d3.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/1079/builds/4229) and take a look at the build logs.
Check if the failure is related to this commit (d4039d3) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/1079/builds/4229

Failed tests:

test_repl

Failed subtests:

test_asyncio_repl_is_ok - test.test_repl.TestInteractiveInterpreter.test_asyncio_repl_is_ok

Summary of the results of the build (if available):

==

Click to see traceback logs

Traceback (most recent call last):
  File "R:\buildarea\3.x.ambv-bb-win11.bigmem\build\Lib\test\test_repl.py", line 199, in test_asyncio_repl_is_ok
    assert_python_ok("-m", "asyncio")
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "R:\buildarea\3.x.ambv-bb-win11.bigmem\build\Lib\test\support\script_helper.py", line 180, in assert_python_ok
    return _assert_python(True, *args, **env_vars)
  File "R:\buildarea\3.x.ambv-bb-win11.bigmem\build\Lib\test\support\script_helper.py", line 165, in _assert_python
    res.fail(cmd_line)
    ~~~~~~~~^^^^^^^^^^
  File "R:\buildarea\3.x.ambv-bb-win11.bigmem\build\Lib\test\support\script_helper.py", line 75, in fail
    raise AssertionError("Process return code is %d\n"
    ...<13 lines>...
                            err))
AssertionError: Process return code is 2147483651
command line: ['R:\\buildarea\\3.x.ambv-bb-win11.bigmem\\build\\PCbuild\\amd64\\python_d.exe', '-X', 'faulthandler', '-I', '-m', 'asyncio']

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Fedora Stable Clang Installed 3.13 has failed when building commit 9f0269d.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/1493/builds/120) and take a look at the build logs.
Check if the failure is related to this commit (9f0269d) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/1493/builds/120

Summary of the results of the build (if available):

Click to see traceback logs

remote: Enumerating objects: 4, done.        
remote: Counting objects:  25% (1/4)        
remote: Counting objects:  50% (2/4)        
remote: Counting objects:  75% (3/4)        
remote: Counting objects: 100% (4/4)        
remote: Counting objects: 100% (4/4), done.        
remote: Compressing objects:  25% (1/4)        
remote: Compressing objects:  50% (2/4)        
remote: Compressing objects:  75% (3/4)        
remote: Compressing objects: 100% (4/4)        
remote: Compressing objects: 100% (4/4), done.        
remote: Total 4 (delta 0), reused 3 (delta 0), pack-reused 0        
From https://github.com/python/cpython
 * branch                  3.13       -> FETCH_HEAD
Note: switching to '9f0269d6aed1b61996b95dc0730a4008de012011'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at 9f0269d6ae [3.13] gh-120526: Correct signature of map() builtin (GH-120528) (GH-120539)
Switched to and reset branch '3.13'

configure: WARNING: no system libmpdecimal found; falling back to bundled libmpdecimal (deprecated and scheduled for removal in Python 3.15)

Python/import.c:1555:1: warning: unused function 'is_core_module' [-Wunused-function]
 1555 | is_core_module(PyInterpreterState *interp, PyObject *name, PyObject *path)
      | ^~~~~~~~~~~~~~
1 warning generated.
Python/pystate.c:1135:1: warning: unused function 'check_interpreter_whence' [-Wunused-function]
 1135 | check_interpreter_whence(long whence)
      | ^~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.

make: [Makefile:2656: libinstall] Error 1 (ignored)
ERROR: Could not install packages due to an OSError: [Errno 28] No space left on device: '/home/buildbot/buildarea/3.13.cstratak-fedora-stable-x86_64.clang-installed/build/target/lib/python3.13/site-packages/pip'

Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/home/buildbot/buildarea/3.13.cstratak-fedora-stable-x86_64.clang-installed/build/Lib/ensurepip/__main__.py", line 5, in <module>
    sys.exit(ensurepip._main())
             ~~~~~~~~~~~~~~~^^
  File "/home/buildbot/buildarea/3.13.cstratak-fedora-stable-x86_64.clang-installed/build/Lib/ensurepip/__init__.py", line 257, in _main
    return _bootstrap(
        root=args.root,
    ...<4 lines>...
        default_pip=args.default_pip,
    )
  File "/home/buildbot/buildarea/3.13.cstratak-fedora-stable-x86_64.clang-installed/build/Lib/ensurepip/__init__.py", line 172, in _bootstrap
    return _run_pip([*args, "pip"], [os.fsdecode(tmp_wheel_path)])
  File "/home/buildbot/buildarea/3.13.cstratak-fedora-stable-x86_64.clang-installed/build/Lib/ensurepip/__init__.py", line 87, in _run_pip
    return subprocess.run(cmd, check=True).returncode
           ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/home/buildbot/buildarea/3.13.cstratak-fedora-stable-x86_64.clang-installed/build/Lib/subprocess.py", line 577, in run
    raise CalledProcessError(retcode, process.args,
                             output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['/home/buildbot/buildarea/3.13.cstratak-fedora-stable-x86_64.clang-installed/build/python', '-W', 'ignore::DeprecationWarning', '-c', '\nimport runpy\nimport sys\nsys.path = [\'/tmp/tmpy4y9osax/pip-24.0-py3-none-any.whl\'] + sys.path\nsys.argv[1:] = [\'install\', \'--no-cache-dir\', \'--no-index\', \'--find-links\', \'/tmp/tmpy4y9osax\', \'--root\', \'/\', \'--upgrade\', \'pip\']\nrunpy.run_module("pip", run_name="__main__", alter_sys=True)\n']' returned non-zero exit status 1.
make: *** [Makefile:2280: install] Error 1

map() requires at least one iterable arg. Signed-off-by: Adam Williamson <awilliam@redhat.com>

AdamWill requested a review from ericsnowcurrently as a code owner June 14, 2024 22:07

bedevere-app Bot mentioned this pull request Jun 14, 2024

inspect.signature(map) works in Python 3.13, but gives a signature that looks like only one arg is required #120526

Closed

bedevere-app Bot added the awaiting review label Jun 14, 2024

AdamWill force-pushed the correct-map-signature branch from 28c31da to fd2b592 Compare June 14, 2024 22:07

AdamWill force-pushed the correct-map-signature branch from fd2b592 to 77089f2 Compare June 14, 2024 22:08

This was referenced Jun 14, 2024

Test failures with Python 3.13 pytoolz/toolz#581

Closed

Test fixes for changes in recent upstream Python (#581) pytoolz/toolz#582

Merged

serhiy-storchaka approved these changes Jun 15, 2024

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bedevere-app Bot added awaiting merge and removed awaiting review labels Jun 15, 2024

serhiy-storchaka enabled auto-merge (squash) June 15, 2024 05:32

serhiy-storchaka added skip news needs backport to 3.13 bugs and security fixes labels Jun 15, 2024

serhiy-storchaka merged commit d4039d3 into python:main Jun 15, 2024

bedevere-app Bot removed the awaiting merge label Jun 15, 2024

bedevere-app Bot removed the needs backport to 3.13 bugs and security fixes label Jun 15, 2024

mrahtz pushed a commit to mrahtz/cpython that referenced this pull request Jun 30, 2024

pythongh-120526 : Correct signature of map() builtin (pythonGH-120528 )

67b2a02

map() requires at least one iterable arg. Signed-off-by: Adam Williamson <awilliam@redhat.com>

noahbkim pushed a commit to hudson-trading/cpython that referenced this pull request Jul 11, 2024

pythongh-120526 : Correct signature of map() builtin (pythonGH-120528 )

34893a1

map() requires at least one iterable arg. Signed-off-by: Adam Williamson <awilliam@redhat.com>

estyxx pushed a commit to estyxx/cpython that referenced this pull request Jul 17, 2024

pythongh-120526 : Correct signature of map() builtin (pythonGH-120528 )

6f25a2d

map() requires at least one iterable arg. Signed-off-by: Adam Williamson <awilliam@redhat.com>

gh-120526: Correct signature of map builtin by AdamWill · Pull Request #120528 · python/cpython · GitHub

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gh-120526: Correct signature of map builtin#120528
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