Method choice

Lib/random.py:347–354

Choose a random element from a non-empty sequence.

(self, seq)

    ## -------------------- sequence methods  -------------------

    def choice(self, seq):
        """Choose a random element from a non-empty sequence."""

        # As an accommodation for NumPy, we don't use "if not seq"
        # because bool(numpy.array()) raises a ValueError.
        if not len(seq):
            raise IndexError('Cannot choose from an empty sequence')
        return seq[self._randbelow(len(seq))]

    def shuffle(self, x):
        """Shuffle list x in place, and return None."""