Operator precedence. You're actually checking equality between (True, True, True) and True in your second code snippet, and then building a tuple with that result as the first item.
Recall that in Python by specifying a comma-separated "list" of items without any brackets, it returns a tuple:
>>> a = True, True, True
(True, True, True)
Code snippet 2 is no exception here. You're attempting to build a tuple using the same syntax, it just so happens that the first element is (True, True, True) == True, the second element is True, and the third element is True.
So code snippet 2 is equivalent to:
(((True, True, True) == True), True, True)
And since (True, True, True) == True is False (you're comparing a tuple of three objects to a boolean here), the first element becomes False.
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