Python Numbers #

Integer #

A whole number.

num = 3
print(type(num))
# <class 'integer'>

Float #

A decimal.

num = 3.14

print(type(num))
# <class 'float'>

Operators #

Some of this seems obvious, but for the sake of being complete, let’s state the obvious nonetheless.

Regarding the modulus operator – it’s often used to check if a value is even or odd:

3 % 2 # 1, odd
4 % 2 # 0, even

Logic #

Incrementing #

num = 1

num = num + 1

or

num = 1

num += 1

Something different:

num = 1

num *= 10

Absolute value #

abs(<some number>)

Round #

Round to the nearest integer.

round(<some number>, <number of digits after decimal, defaults to 0>)

Casting #

Convert viable string to number.

int('1')