CODEWITHSUNDEEP
pythonpython-3.x
Prasta Maha
Prasta Maha

Reputation: 75

Can anyone explain why the output of True, True == (True, True) is (True, False)?

I tried to do a comparison like the code below with Python, but instead was confused by the output produced.

Can anyone explain why the output is like this?

>>> True, True == True, True
(True, True, True)
>>> True, True == (True, True)
(True, False)

Upvotes: 4

Views: 783

Answers (1)

Barmar
Barmar

Reputation: 780663

Because of operator precedence. == has higher precedence than ,, so the first expression is treated as if you'd written

True, (True == True), True

Your second expression is treated as

True, (True == (True, True))

If you want to compare the two sides of == element-wise, you need to parenthesize both sides:

(True, True) == (True, True)

This will return True.

Note that comma is not strictly an operator, so but for the purposes of understanding this behavior it's close enough.

Upvotes: 4

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