code: def assert_equal(self, v1, v2, **kwargs):#, desc=None, screenshot=False, safe=False):
          
          is_success = v1 == v2
          if is_success:
              message = "assert equal success, %s == %s" %(v1, v2)
          else:
              message = '%s not equal %s' % (v1, v2)
          kwargs.update({
              'message': message,
              'success': is_success,
          })
          self._add_assert(**kwargs)
docs: Check v1 is equals v2, and take screenshot if not equals
          Args:
              - desc (str): some description
              - safe (bool): will omit AssertionError if set to True
              - screenshot: can be type <None|True|False|PIL.Image>