Hands-On Data Science and Python Machine Learning
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The if statement

print (1 is 3)

The output of the previous code is as follows:

False

The other thing we can do is use is, which is sort of the same thing as equal. It's a more Python-ish representation of equality, so 1 == 3 is the same thing as 1 is 3, but this is considered the more Pythonic way of doing it. So 1 is 3 comes back as False because 1 is not 3.