not not id(object())//3%2

btw, I'm aware this isn't at all random, my initial version of this was an instance of malicious compliance with the tests. In fact, you can make this method perform hilariously badly:

In [1]: d = {True: 0, False: 0}

In [2]: for _ in range(1000000): d[not not id(object())//3%2] += 1

In [3]: d
Out[3]: {True: 0, False: 1000000}

In [4]: for _ in range(1000000): d[not not id(object())//3%2] += 1

In [5]: d
Out[5]: {True: 0, False: 2000000}

In [6]: for _ in range(1000000): d[not not id(object())//3%2] += 1

In [7]: d
Out[7]: {True: 1000000, False: 2000000}

Function id() always returns the even number. Your function is not random and always return True.

You can't do this... Function id() always returns the even number. Your function is not random and always return True.