'Checks if a permutation is odd.
Examples
>>> from sympy.combinatorics.permutations import Permutation
>>> p = Permutation([0, 1, 2, 3])
>>> p.is_odd
False
>>> p = Permutation([3, 2, 0, 1])
>>> p.is_odd
True
See Also
is_even'

@property
def is_odd(self):

    return bool((self.parity() % 2))
