Python -Variables and Operators - Formula Sheet

Arithmetic Operators and Formulas

Arithmetic operators are used to perform mathematical calculations on numeric operands. The table below outlines each operator's formula, action, and returns:

Comparative and Relational Operations

Relational operators determine the comparative relationship between two operands, returning Boolean outcomes (True or False):

• a == b : Checks if operand a is mathematically equal to operand b.
• a != b : Checks if operand a is not equal to operand b.
• a greater than b : Evaluates if operand a is strictly greater than operand b.
• a less than b : Evaluates if operand a is strictly less than operand b.
• a greater than or equal to b : Checks if operand a is greater than or equal to operand b.
• a less than or equal to b : Checks if operand a is less than or equal to operand b.

Logical Expressions

Logical operators perform Boolean algebra calculations on relational conditions:

• p and q : Returns True if both Boolean sub-expressions p and q evaluate to True.
• p or q : Returns True if at least one of the Boolean sub-expressions p or q evaluates to True.
• not p : Negates the Boolean value of expression p (returns True if p is False, and vice versa).

Ternary Conditional Expression Formula

The ternary conditional expression calculates and assigns values based on a evaluated predicate statement:

V = T if C else F

Where:

• V represents the target variable.
• C represents the Boolean test condition to be evaluated.
• T is the expression or value assigned to V if the test condition C is True.
• F is the expression or value assigned to V if the test condition C is False.