Hervé Beraud <herveberaud.pro@xxxxxxxxx> writes:
> Signed-off-by: Hervé Beraud <herveberaud.pro@xxxxxxxxx>
> ---
> contrib/hg-to-git/hg-to-git.py | 52 +++++++++++++++++++++---------------------
> 1 file changed, 26 insertions(+), 26 deletions(-)
I think you shrunk the scope of the change, but I feel that it is
still a bit under-explained. Let me try to write a proposed commit
log message and ask you to see if I understood the idea behind the
changes correctly:
Rewrite features that are no longer supported (or recommended)
in Python 3 in the script so that it can be used with both
Python 2 and 3, namely:
- print is not a statement; use print() function instead.
- dict.has_key(key) is no more; use "key in dict" instead.
- map(lambda ..., collection) is not liked; use list comprehension.
Hopefully this would also serve as an illustration of the kind of
things we want in our log message.
I am not sure about the change from map(lambda ...) to list
comprehension, though. Not that I have a preference for or against
(I am not a Python person), but I do not know if this is a change
necessary to run with Python 3 or if it is merely more preferred to
use list comprehension.
Thanks.
> diff --git a/contrib/hg-to-git/hg-to-git.py b/contrib/hg-to-git/hg-to-git.py
> index de3f81667ed97..8fa7698df5c20 100755
> --- a/contrib/hg-to-git/hg-to-git.py
> +++ b/contrib/hg-to-git/hg-to-git.py
> @@ -42,7 +42,7 @@
>
> def usage():
>
> - print """\
> + print("""\
> %s: [OPTIONS] <hgprj>
>
> options:
> @@ -54,7 +54,7 @@ def usage():
>
> required:
> hgprj: name of the HG project to import (directory)
> -""" % sys.argv[0]
> +""" % sys.argv[0])
>
> #------------------------------------------------------------------------------
>
> @@ -104,29 +104,29 @@ def getgitenv(user, date):
> if state:
> if os.path.exists(state):
> if verbose:
> - print 'State does exist, reading'
> + print('State does exist, reading')
> f = open(state, 'r')
> hgvers = pickle.load(f)
> else:
> - print 'State does not exist, first run'
> + print('State does not exist, first run')
>
> sock = os.popen('hg tip --template "{rev}"')
> tip = sock.read()
> if sock.close():
> sys.exit(1)
> if verbose:
> - print 'tip is', tip
> + print('tip is', tip)
>
> # Calculate the branches
> if verbose:
> - print 'analysing the branches...'
> + print('analysing the branches...')
> hgchildren["0"] = ()
> hgparents["0"] = (None, None)
> hgbranch["0"] = "master"
> for cset in range(1, int(tip) + 1):
> hgchildren[str(cset)] = ()
> prnts = os.popen('hg log -r %d --template "{parents}"' % cset).read().strip().split(' ')
> - prnts = map(lambda x: x[:x.find(':')], prnts)
> + prnts = [x[:x.find(':')] for x in prnts]
> if prnts[0] != '':
> parent = prnts[0].strip()
> else:
> @@ -154,15 +154,15 @@ def getgitenv(user, date):
> else:
> hgbranch[str(cset)] = "branch-" + str(cset)
>
> -if not hgvers.has_key("0"):
> - print 'creating repository'
> +if "0" not in hgvers:
> + print('creating repository')
> os.system('git init')
>
> # loop through every hg changeset
> for cset in range(int(tip) + 1):
>
> # incremental, already seen
> - if hgvers.has_key(str(cset)):
> + if str(cset) in hgvers:
> continue
> hgnewcsets += 1
>
> @@ -180,27 +180,27 @@ def getgitenv(user, date):
> os.write(fdcomment, csetcomment)
> os.close(fdcomment)
>
> - print '-----------------------------------------'
> - print 'cset:', cset
> - print 'branch:', hgbranch[str(cset)]
> - print 'user:', user
> - print 'date:', date
> - print 'comment:', csetcomment
> + print('-----------------------------------------')
> + print('cset:', cset)
> + print('branch:', hgbranch[str(cset)])
> + print('user:', user)
> + print('date:', date)
> + print('comment:', csetcomment)
> if parent:
> - print 'parent:', parent
> + print('parent:', parent)
> if mparent:
> - print 'mparent:', mparent
> + print('mparent:', mparent)
> if tag:
> - print 'tag:', tag
> - print '-----------------------------------------'
> + print('tag:', tag)
> + print('-----------------------------------------')
>
> # checkout the parent if necessary
> if cset != 0:
> if hgbranch[str(cset)] == "branch-" + str(cset):
> - print 'creating new branch', hgbranch[str(cset)]
> + print('creating new branch', hgbranch[str(cset)])
> os.system('git checkout -b %s %s' % (hgbranch[str(cset)], hgvers[parent]))
> else:
> - print 'checking out branch', hgbranch[str(cset)]
> + print('checking out branch', hgbranch[str(cset)])
> os.system('git checkout %s' % hgbranch[str(cset)])
>
> # merge
> @@ -209,7 +209,7 @@ def getgitenv(user, date):
> otherbranch = hgbranch[mparent]
> else:
> otherbranch = hgbranch[parent]
> - print 'merging', otherbranch, 'into', hgbranch[str(cset)]
> + print('merging', otherbranch, 'into', hgbranch[str(cset)])
> os.system(getgitenv(user, date) + 'git merge --no-commit -s ours "" %s %s' % (hgbranch[str(cset)], otherbranch))
>
> # remove everything except .git and .hg directories
> @@ -233,12 +233,12 @@ def getgitenv(user, date):
>
> # delete branch if not used anymore...
> if mparent and len(hgchildren[str(cset)]):
> - print "Deleting unused branch:", otherbranch
> + print("Deleting unused branch:", otherbranch)
> os.system('git branch -d %s' % otherbranch)
>
> # retrieve and record the version
> vvv = os.popen('git show --quiet --pretty=format:%H').read()
> - print 'record', cset, '->', vvv
> + print('record', cset, '->', vvv)
> hgvers[str(cset)] = vvv
>
> if hgnewcsets >= opt_nrepack and opt_nrepack != -1:
> @@ -247,7 +247,7 @@ def getgitenv(user, date):
> # write the state for incrementals
> if state:
> if verbose:
> - print 'Writing state'
> + print('Writing state')
> f = open(state, 'w')
> pickle.dump(hgvers, f)
>
>
> --
> https://github.com/git/git/pull/458
