The pkg_resources.parse_version method is deprecated. Let's test our backported
method here:

  >>> import p01.build.base

  >>> def printVersions(g):
  ...     for v in tuple(g):
  ...         print(v)

  >>> printVersions(p01.build.base.parseVersion('0.0.1'))
  00000000
  00000000
  00000001
  *final

  >>> printVersions(p01.build.base.parseVersion('0.0.1dev0'))
  00000000
  00000000
  00000001
  *@
  *final

  >>> printVersions(p01.build.base.parseVersion('0.5.0'))
  00000000
  00000005
  *final

  >>> printVersions(p01.build.base.parseVersion('5.0.0'))
  00000005
  *final
