Method __call__

lib/matplotlib/widgets.py:42–46

Reserve the lock for *o*.

(self, o)

        self._owner = None

    def __call__(self, o):
        """Reserve the lock for *o*."""
        if not self.available(o):
            raise ValueError('already locked')
        self._owner = o

    def release(self, o):
        """Release the lock from *o*."""