Method clear

Lib/collections/__init__.py:1144–1146

Clear maps[0], leaving maps[1:] intact.

(self)

            raise KeyError(f'Key not found in the first mapping: {key!r}')

    def clear(self):
        'Clear maps[0], leaving maps[1:] intact.'
        self.maps[0].clear()

    def __ior__(self, other):
        self.maps[0].update(other)