Python Coding Challenge - Question with Answer (ID -190426)

Explanation:

🔹 Step 1: Define Function

def f(x, y=2): return x*y

Function f takes:

x → required argument

y → default value = 2

It returns:

👉 x * y

🔹 Step 2: First Function Call

f(3)

Only x is provided → x = 3

Default y = 2 is used

👉 Calculation:

3 * 2 = 6

🔹 Step 3: Second Function Call

f(3, None)

Now:

x = 3

y = None (default is overridden ❗)

👉 Calculation:

3 * None

⚠️ Important Concept

None is not a number

Multiplication with None is not allowed

👉 So Python raises:

TypeError: unsupported operand type(s)\

🔹 Step 4: Print Statement

print(f(3), f(3, None))

First call → prints 6

Second call → ❌ causes error

👉 Output:

 Error

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