Arithmetic Operators and Priority Theory of Operations | Python Programming By Akash

 1.   Arithmetic Operators:

Definition: These are special symbols used to perform basic mathematical calculations within code. They handle standard operations like addition, subtraction, multiplication, and division. Any operator that performs a fundamental math task falls into this category.

List of Operators:

• + : Addition (Adds two values)
• - : Subtraction (Subtracts one value from another)
• * : Multiplication (Multiplies two values)
• / : Division (Divides and gives a decimal result)
• % : Modulus (Divides and gives only the Remainder)
• ** : Exponentiation (Calculates the Power, e.g., $2^3$)

For Example,

2.   Priority Theory (Precedence):

Definition: It is a term or rule used to decide which calculation happens first when we write multiple operators in a single line of code. It prioritizes the operations based on standard math rules, meaning it solves Brackets/Parentheses () first, then Powers/Exponents, then Multiplication or Division, and lastly Addition or Subtraction.

The Priority Order (First to Last):

1. () : Brackets (The Boss - always first)
2. ** : Power
3. *, /, % : Multiply, Divide, Remainder
4. +, - : Add, Subtract

For Example,

3.   PEMDAS Rule:

Definition: It is a short formula or rule used to easily remember the order of Priority Theory. It stands for the sequence in which Python solves mathematical parts of the code, starting from Parentheses and ending with Subtraction.

The Full Form:

• P - Parentheses ()
• E - Exponents ** (Powers)
• M / D - Multiplication * & Division / (These are equal, so Python solves them Left to Right)
• A / S - Addition + & Subtraction - (These are equal, so Python solves them Left to Right)

For Example,

4.   BODMAS Rule:

Definition: It is a popular rule used to remember the priority of mathematical operations in code. It helps us decide which part of a calculation to solve first. It stands for the sequence starting from Brackets and ending with Subtraction.

The Full Form:

• B - Brackets () (Same as Parentheses)
• O - Orders ** (Powers, Exponents, or Roots)
• D / M - Division / & Multiplication * (Solved Left to Right)
• A / S - Addition + & Subtraction - (Solved Left to Right)

For Example,