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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def make_version(ref=None):
 """Build git version string for current directory"""

    cmd = 'git describe --tags --abbrev=6 {}'.format(ref or '')
    with hide('commands'):
        version = local(cmd, capture=True).strip()
    if re.match('^v[0-9]', version):
        version = version[1:]
    # replacements to match semver.org build numbers
    if '-' in version:
        head, _, tail = version.partition('-')
        count, _, sha = tail.partition('-g')
        version = head + '+' + count + '-' + sha
    return version