Operator precedence and evaluation order in Python - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

What is the output of this expression with mixed operators?

Consider the following Python expression. What will it print?

Python

result = 3 + 4 * 2 ** 2 - 5 // 2
print(result)

A 14

B 15

C 17

D 13

💡 Hint

Remember the order: exponentiation, then multiplication/division, then addition/subtraction.

Exponentiation (2 ** 2) is 4, then multiplication (4 * 4) is 16, integer division (5 // 2) is 2, so 3 + 16 - 2 = 17.

❓ Predict Output

intermediate

What is the output of this chained comparison?

What does this code print?

Python

x = 5
print(1 < x < 10)

A True

B False

C SyntaxError

D TypeError

💡 Hint

Python supports chaining comparisons like this.

The expression 1 < x < 10 checks if x is greater than 1 and less than 10 simultaneously. Since x is 5, this is True.

❓ Predict Output

advanced

What is the output of this expression with logical and bitwise operators?

What will this code print?

Python

a = 0b1010
b = 0b1100
result = a & b == 0b1000
print(result)

A True

B False

C TypeError

D SyntaxError

💡 Hint

Remember operator precedence: & has higher precedence than ==.

The expression a & b == 0b1000 is evaluated as (a & b) == 0b1000. a & b is 0b1000 (8), so the comparison is True.

❓ Predict Output

advanced

What is the output of this expression with mixed boolean and arithmetic operators?

What does this code print?

Python

x = 3
result = x > 2 and x < 5 or x == 10
print(result)

A False

B True

C SyntaxError

D TypeError

💡 Hint

Remember that 'and' has higher precedence than 'or'.

The expression is evaluated as (x > 2 and x < 5) or (x == 10). Since x is 3, x > 2 and x < 5 is True, so the whole expression is True.

❓ Predict Output

expert

What is the output of this complex expression with assignment and arithmetic?

What will this code print?

Python

x = 2
x *= 3 + 4
print(x)

A SyntaxError

B 10

C 6

D 14

💡 Hint

Remember operator precedence: '+' is evaluated before '*='.

The expression x *= 3 + 4 is evaluated as x *= (3 + 4), so x = 2 * 7 = 14.