Numbers and math

• Types of numbers in python

  • integer
    • whole numbers
    • takes up less space than floats
  • floating point (floats)
    • has decimals
    • takes up more space than integers
    • (any expression) + float = float
      • 1 + 1.0 = 2.0
  • complex
  • long

• Operators

# === Math ===
2 + 1 
2 - 1 
2 * 1 
2 ** 3
4 % 2 # Modulo (remainder operation)
4 / 2 # division
4 // 2 # integer division
 
# === division ===
# division always returns a float
1 / 2 # 0.5 
1 // 2 # 0 (rounds down)
10 / 3 # 3.3333...
10 // 3 # 3 
 
# === Precedence ===
# 1) ** 2) *,/,//,% 3) +,- 4) ==,!=,<=,>=,<,>
# 5) not 6) and 7) or