Method first

functional/pipeline.py:241–257

Returns the first element of the sequence. >>> seq([1, 2, 3]).first() 1 Raises IndexError when the sequence is empty. >>> seq([]).first() Traceback (most recent call last): ... IndexError: list index out of range :return:

(self)

        return _wrap(self.take(1)[0])

    def first(self):
        """
        Returns the first element of the sequence.

        >>> seq([1, 2, 3]).first()
        1

        Raises IndexError when the sequence is empty.

        >>> seq([]).first()
        Traceback (most recent call last):
         ...
        IndexError: list index out of range

        :return: first element of sequence
        """
        return self.head()

    def head_option(self):
        """