Udemy 37~40

Operators

• 4 + 5 = 9, 4 and 5 are operands, + is operator.

Arithmetic Operators

• +, -, *, /, %, **

Membership Operators

• in and not in (in 240103)

Comparison Operators

• Operands are usually numbers.
• Will return a boolean
• == If 2 operands are equal, return True (boolean).
• != If 2 operands are not equal, return True (boolean).
• > If the 1st operand is greater, return True (boolean)?
• < If the 2nd operand is greater, return True (boolean).
• >= If the 1st operand is greater or equal to the 2nd operand, return True (boolean).
• <= If the 2nd operand is greater or equal to the 1st operand, return True (boolean).

Assignment Operators

• In x = 5, “=“ is an assignment operator.
• = 將右側operand的值指派給左側operand
• += means x = x + k