Python Coding Challenge - Question with Answer (ID 010926)

 

Explanation:

1. Assign x = 10

x = 10

A variable x is created and assigned the value 10.

x → 10

2. Create the Lambda Function

f = lambda a=x: a

Here, a lambda function is created and stored in f.

The important part is:

a=x

This gives parameter a a default value.

At the moment the lambda is created, x is 10.

So Python effectively stores:

f = lambda a=10: a

Therefore:

f() → 10

3. Change x

x = 20

Now x is changed from 10 to 20.

x → 20

However, this does not change the default value already stored inside the lambda.

The lambda still has:

a → 10

4. Call the Lambda

print(f())

f() is called without providing a value for a.

Therefore, Python uses the stored default value:

a → 10

So:

f() → 10

5. print() Displays the Result

The expression becomes:

print(10)

✅ Final Output

10

Book: Python for Chemistry from Fundamentals to Real-World Applications