For commands that have dashes in their names, for example /usr/bin/google-chrome, substitute the dash for an underscore:
I am trying to run the command
git rev-parse --abbrev-ref HEAD
When I try to run the command, git returns an error that I have the wrong command. Any way to get around this?
>>> from sh import git
>>> git.rev_parse('--abbrev-ref', 'HEAD')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Library/Python/2.7/site-packages/sh.py", line 769, in __call__
return RunningCommand(cmd, call_args, stdin, stdout, stderr)
File "/Library/Python/2.7/site-packages/sh.py", line 330, in __init__
self.wait()
File "/Library/Python/2.7/site-packages/sh.py", line 334, in wait
self._handle_exit_code(self.process.wait())
File "/Library/Python/2.7/site-packages/sh.py", line 348, in _handle_exit_code
self.process.stderr
sh.ErrorReturnCode_1:
RAN: '/usr/bin/git rev_parse --abbrev-ref HEAD'
STDOUT:
STDERR:
git: 'rev_parse' is not a git command. See 'git --help'.
Did you mean this?
rev-parse
>>>
I am unsure as to why it's not working.
However, I found that this works instead:
git('rev-parse', '--abrev-ref', 'HEAD')
Leads to:
RAN: '/usr/bin/git rev-parse --abrev-ref HEAD'
The substitution rule is only for the command itself -- git
-- not for arguments such as 'rev-parse'
. This is done because dashes aren't possible in Python function names, but are perfectly possible in options.
@runDOSrun found one solution:
git('rev-parse', '--abrev-ref', 'HEAD')
That said, let's say you used subcommand syntax to pass rev-parse
implicitly, like so:
git.rev_parse('--abrev-ref', 'HEAD')
The underscore would be appropriate in that case, as you would be prepending the subcommand via a Python token, limited to the usual set of characters (which excludes dashes!) available in that case.
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