docs: def has_gpg_key(fingerprint):
      """Checks to see if we have this gpg fingerprint"""
      if len(fingerprint) > 8:
          fingerprint = fingerprint[-8:]
  
      fingerprint = fingerprint.upper()
      cmd = flatten([gnupg_bin(), gnupg_home(), "--list-public-keys"])
      lines = stderr_output(cmd).split('\n')
      return len([key for key in lines if key.find(fingerprint) > -1]) == 1