Operators Overview

Operators Overview

Operators are symbols that tell Python to do something with values. There are seven main groups.

The groups

Quick taste

print(5 + 3)      # 8
print(5 == 5)     # True
print("a" in "cat") # True

Operator precedence

When several operators appear, Python follows rules:

• () first
• then **
• then * / // %
• then + -
• then comparisons
• then not
• then and
• then or

print(2 + 3 * 4)   # 14 (not 20)
print((2 + 3) * 4) # 20

TL;DR

• Seven groups of operators exist.
• Arithmetic does math; comparison and logical drive decisions.
• Identity (is) compares objects; membership (in) checks collections.
• * beats +, and parentheses beat everything.