'Odd number predicate.
``ask(Q.odd(x))`` is true iff ``x`` belongs to the set of odd numbers.
Examples
>>> from sympy import Q, ask, pi
>>> ask(Q.odd(0))
False
>>> ask(Q.odd(2))
False
>>> ask(Q.odd(3))
True
>>> ask(Q.odd(pi))
False'

@predicate_memo
def odd(self):

    return Predicate('odd')
