Python Numbers

Numbers are core to programming. Python mainly uses:

• int for whole numbers
• float for decimals

Basic arithmetic operators

x = 10
y = 3

print(x + y)
print(x - y)
print(x * y)
print(x / y)
print(x // y)
print(x % y)
print(x ** y)

Expected output:

13
7
30
3.3333333333333335
3
1
1000

What each operator means (concept)

• / gives true division (usually float)
• // gives floor division (drops decimal)
• % gives remainder
• ** is power/exponent

Rounding and absolute values

print(round(3.7))
print(round(3.14159, 2))
print(abs(-10))

Expected output:

4
3.14
10

math module (advanced operations)

import math

print(math.sqrt(16))
print(math.floor(3.7))
print(math.ceil(3.1))

Expected output:

4.0
3
4

Graph: division behavior

flowchart TD
  A["10 / 3"] --> B[3.333... float]
  C["10 // 3"] --> D[3 int]
  E["10 % 3"] --> F[1 remainder]

In the next lesson, you will learn lists, how indexing works, and how to manipulate collections of data.