Arithmetic Operators

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Arithmetic Operators will let you perform simple mathematical-like operations. The most intuitive use case is with numbers, but they'll also work with several other type like strings or collections.

These are the most common ones:

print(5 + 2)
print(5 - 2)
print(5 * 2)
print(5 / 2)
print(5 ** 2)  # 5² == 5 * 5
7
3
10
2.5
25

But we also have a few less-common but equally important:

Floor Division

(Also known as Integer Division)

print(5 // 2)
print(4 // 2)
2
2

Modulus

(Also known as "the remainder")

print(4 % 2)
print(5 % 2)
print(10 % 2)
print(11 % 2)
0
1
0
1

Arity of arithmetic operators

As you saw in the introduction, some of these operators will work as both binary and unary operators. Both the minus (-) and plus (+) symbols fall in this category:

print(+3)
print(-5)

x = 2
print(+x)
print(-x)
3
-5
2
-2

    Questions: