In [1]: True
Out[1]: True

In [2]: TrueFalse
---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-2-a1371cdd511e> in <module>()
----> 1 TrueFalse

NameError: name 'TrueFalse' is not defined

In [3]: True = False

In [4]: True
Out[4]: False

In [5]: