code: def render_pep440(vcs):
      
  
      if vcs is None:
          return None
  
      tags = vcs.split('-')
  
      # Bare version number
      if len(tags) == 1:
          return tags[0]
      else:
          return tags[0] + '+' + '.'.join(tags[1:])
docs: Convert git release tag into a form that is PEP440 compliant.