Python Operator Precedence Explained with Examples (Easy Guide)



Operator Precedence in 🐍Python

Part 1: What is Operator Precedence in 🐍Python?

As we know there is Different Kind of Operators.Operator Precedence means the order in which the Different Operators are Evaluated. We use Multiple Operator in a Single statement than they follow the Operator Precedence Rule.In Simple Words Precedence means which Operator will solved first. Example:
    Input:   20-3*5

    Step 1   3*5=15
    Step 2   20-15=5

    Output:   5


Part 2: Operator precedence (High to low)

Parentheses () Example :
10-(3*5)
3*5=15
10-15
-5
Exponent Power, ** Example :
100-(3**4)
3**4=81
100-81
19
Multiplication, Division, Integer Division, Modulus *,

/,

//,

%		 Example :
20 + 6 * 4 / 2 // 3 % 5
Step 1: 6 * 4 = 24
20 + 24 / 2 // 3 % 5

Step 2: 24 / 2 = 12.0
20 + 12.0 // 3 % 5

Step 3: 12.0 // 3 = 4.0
20 + 4.0 % 5

Step 4: 4.0 % 5 = 4.0
20 + 4.0

Step 5: 20 + 4.0 = 24.0
Addition, Subtraction +,- Example :
20+10-8
22
Comparison Operator ==,

!=,

<,

>,

<=,

>=		 Example :
a = 10
b = 5
a == b # False

a != b # True

a > b # True

a < b # False

a >= 10 # True

b <= 5 # True
Logical Operator And,

Or,

Not
 Example :
x = 8
y = 3
print(x > 5 and y < 5) # True

print(x < 5 or y < 5) # True

print(not(x == y)) # True

Part 3: Important Rules In Precedence of Python

  1. Parentheses override everything
    2. Example:Statement: 2*(7-3) ---> 2*4 --->8

  2. Same precedence → use associativity
    • Most Operators: left → right
      • Example : 2+3-4 -→→ 2+3=5 -→→ 5-4=1 -→→ 1

    • Exception: ** , Power, Exponent : Right → Left
      • Example : 2**3**2 →→ 3**2=9 →→ 2**9 = 512

  3. Logical Operator Precedence
    When Multiple Logical Operator use in one Expression/Statment, Then they follow Some Order(High to Low).

    NOT (!)
    >Highest    		AND (&&)
    >Middle    		OR (||)
    > Lowest
    Example 1: True OR False →→ True
    Example 2: True OR True AND False →→ True AND False=False →→True OR False= True
    Example 3: Not True AND False OR True →→ NOT True=False →→ False AND False=False →→ False OR →→True= →→True


Part 4: How to learn in Easy way

Part 4.1: Think About the Video Game

  • Step 1 = Power Up The Player (Brackets)
  • Step 2 = Super power Attack (Exponent)
  • Step 3 = Fight Enemies (*, /, //, %)
  • Step 4 = Collect points(+, -)

    • Part 4.2: Easy Trick: The BODMAS Rule

    B Brackets "(5-2)"
    O Order "5**2"
    D Division "5/2"
    M Multiple "5*2
    A Addition "5+2"
    S Subtraction "5-2"