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Logical operators

There are four logical operators that work specifically on Boolean values:

• !—the NOT keyword (inverse of the resulting value):

>>> not (5 > 4)False

Jupyter interprets cells with an exclamation mark at the beginning as Terminal commands, so we can't use it there.

• |—the OR keyword (one or another, or both the values):

>>> (5 > 4) | (6 < 5)True

• &—the AND keyword (one and another value):

>>> (5 > 4) & (6 < 5)False

• ^—the XOR keyword (either one or another, but not both of the values):

>>> (5 > 4) ^ (5 < 6)False

The following are built-in functions that work on Boolean arrays:

• all(): Will return true only if all elements are True
• any(): Will return true if at least one element is True

Python has strong typing—it does ...