In [1]: False == False in [False]
Out[1]: True

In [2]: False == False
Out[2]: True

In [3]: False in [False]
Out[3]: True

In [4]: False == (False in [False])
Out[4]: False

In [5]: True in [False]
Out[5]: False

In [6]: False == False in [False]
Out[6]: True