git - How to get the unique part of a ref ID with GitPython? -

gitpython allows me work on git working copies. i'd use it. how fetch unique part, i.e. "abbreviated ref id", using gitpython?

so interested in --abbrev-commit option git log gives me (e.g. in git log --abbrev-commit --pretty=oneline -n 1).

how can in gitpython - or have implement enumerating through ref ids , figuring out required length on own?

the following code example on how use git rev-parse --short functionality gitpython:

import git r = git.repo() short = r.git.rev_parse(r.head, short=true) print(short) # u'f360ecd' 

it appears using git-command preferable on implementing in safe fashion.

a naive pure-python implementation though:

r.head.commit.hexsha[:7] 

however, doesn't check if obtained prefix unique @ time of creation, why git-command based approach should preferred.