upstream/mercurial-mirror Files · contrib/python-hook-examples.py

manifest: delay import of `typing.ByteString` for py 3.14 support (issue6940)...

manifest: delay import of `typing.ByteString` for py 3.14 support (issue6940) Since Python 2.7 and 3.5, `typing.ByteString` was defined as an alias for `bytes | bytearray | memoryview`, and `bytes` was also accepted as a shorthand for this, so we have `bytes` sprinkled all over the codebase. But then PEP-688 reversed all of that by deprecating `typing.ByteString` and its successor `collections.abc.ByteString` in Python 3.12 (as well as the `bytes` shorthand)[1], and removing it completely in Python 3.14. That leaves us with a couple of problems, namely defining something useful that spans py3.8-py3.13 and keeps pytype happy, and finding all of the instances where `bytes` doesn't really mean `bytes`. The current successor to all of this is `collections.abc.Buffer` in Python 3.12 (or `typing_extensions.Buffer` in previous versions). However, the current CI does type checking using Python 3.11 (so the former is not avaiable), and pytype has issues with importing `typing_extensions.Buffer`[2]. The good news is we don't need to deal with this mess immediately, since the type annotation evaluation is delayed to the type checking phase, and we're making no effort at supporting it in all supported versions of Python. So by delaying the import of this particular symbol, we can still use it for type checking purposes, but can start assessing Python 3.14 problems without doing a lot of extra work. Putting this on stable will allow people interested in 3.14 to work on it 4-5 extra months earlier (and apparently there's some interest). [1] https://peps.python.org/pep-0688/#no-special-meaning-for-bytes [2] https://github.com/google/pytype/issues/1772

Gregory Szorc - - Load All Authors

File last commit:

r49730:6000f5b2 default


                r53224:0851d94b

stable

Download file

             python-hook-examples.py
        
                    26 lines
            
             | 594 B
            
                | text/x-python
            
             |
                PythonLexer
            
             / contrib / python-hook-examples.py
          
                    History
                
                 |
                  Source
                 | Raw
                 |Copy content
                 |Copy permalink

        Alexander Solovyov
    
diffstat hook example

              r7917
            
      '''

        Benoit Boissinot
    
Change wording in example hook

              r7918
            
      Examples of useful python hooks for Mercurial.

        Alexander Solovyov
    
diffstat hook example

              r7917
            
      '''

        Pulkit Goyal
    
contrib: python-hook-examples use absolute_import

              r28562
            
      from mercurial import (

          patch,

          util,

      )

        Alexander Solovyov
    
diffstat hook example

              r7917
            
        Augie Fackler
    
formatting: blacken the codebase...

              r43346
            
        Alexander Solovyov
    
diffstat hook example

              r7917
            
      def diffstat(ui, repo, **kwargs):

        Augie Fackler
    
formating: upgrade to black 20.8b1...

              r46554
            
          """Example usage:

        Alexander Solovyov
    
diffstat hook example

              r7917
            
          [hooks]

          commit.diffstat = python:/path/to/this/file.py:diffstat

          changegroup.diffstat = python:/path/to/this/file.py:diffstat

        Augie Fackler
    
formating: upgrade to black 20.8b1...

              r46554
            
          """

        Alexander Solovyov
    
diffstat hook example

              r7917
            
          if kwargs.get('parent2'):

              return

          node = kwargs['node']

        Matt Mackall
    
misc: replace .parents()[0] with p1()

              r13878
            
          first = repo[node].p1().node()

        Alexander Solovyov
    
diffstat hook example

              r7917
            
          if 'url' in kwargs:

        Martin von Zweigbergk
    
repo: don't look up context for tip node if it's not needed...

              r39931
            
              last = repo.changelog.tip()

        Alexander Solovyov
    
diffstat hook example

              r7917
            
          else:

              last = node

          diff = patch.diff(repo, first, last)

          ui.write(patch.diffstat(util.iterlines(diff)))

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

Alexander Solovyov diffstat hook example	r7917	'''
Benoit Boissinot Change wording in example hook	r7918	Examples of useful python hooks for Mercurial.
Alexander Solovyov diffstat hook example	r7917	'''
Pulkit Goyal contrib: python-hook-examples use absolute_import	r28562	from mercurial import (
		patch,
		util,
		)
Alexander Solovyov diffstat hook example	r7917
Augie Fackler formatting: blacken the codebase...	r43346
Alexander Solovyov diffstat hook example	r7917	def diffstat(ui, repo, **kwargs):
Augie Fackler formating: upgrade to black 20.8b1...	r46554	"""Example usage:
Alexander Solovyov diffstat hook example	r7917
		[hooks]
		commit.diffstat = python:/path/to/this/file.py:diffstat
		changegroup.diffstat = python:/path/to/this/file.py:diffstat
Augie Fackler formating: upgrade to black 20.8b1...	r46554	"""
Alexander Solovyov diffstat hook example	r7917	if kwargs.get('parent2'):
		return
		node = kwargs['node']
Matt Mackall misc: replace .parents()[0] with p1()	r13878	first = repo[node].p1().node()
Alexander Solovyov diffstat hook example	r7917	if 'url' in kwargs:
Martin von Zweigbergk repo: don't look up context for tip node if it's not needed...	r39931	last = repo.changelog.tip()
Alexander Solovyov diffstat hook example	r7917	else:
		last = node
		diff = patch.diff(repo, first, last)
		ui.write(patch.diffstat(util.iterlines(diff)))