code: def find(self, pair, default=None):
          
          pair = normalizers.normalizeKerningKey(pair)
          value = self._find(pair, default)
          if value != default:
              value = normalizers.normalizeKerningValue(value)
          return value
docs: Returns the value for the kerning pair.
          **pair** is a ``tuple`` of two :ref:`type-string`\s, and the returned
          values will either be :ref:`type-int-float` or ``None``
          if no pair was found. ::
  
              >>> font.kerning[("A", "V")]
              -25