docs: def assertpath(path_, msg='', **kwargs):
      """ Asserts that a patha exists """
      if NO_ASSERTS:
          return
      if path_ is None:
          raise AssertionError('path is None! %s' % (path_, msg))
      if path_ == '':
          raise AssertionError('path=%r is the empty string! %s' % (path_, msg))
      if not checkpath(path_, **kwargs):
          raise AssertionError('path=%r does not exist! %s' % (path_, msg))