Python Coding challenge - Day 1164| What is the output of the following Python Code?

 

Code Explanation:

🔹 1. Creating Empty List

funcs = []

✅ Explanation:

An empty list named funcs is created.

This list will store lambda functions.

Current state:

funcs = []

🔹 2. Starting Loop

for i in range(3):

✅ Explanation:

range(3) generates:

0, 1, 2

Loop runs 3 times.

🔹 3. First Iteration (i = 0)

funcs.append(lambda x: x + i)

✅ Explanation:

A lambda function is created:

lambda x: x + i

and stored in the list.

⚠️ Important:

The lambda does not store the value 0.

It stores a reference to variable i.

Current list:

[

    lambda x: x + i

]

🔹 4. Second Iteration (i = 1)

Again:

funcs.append(lambda x: x + i)

Another lambda is added.

Current list:

[

    lambda x: x + i,

    lambda x: x + i

]

🔹 5. Third Iteration (i = 2)

Again:

funcs.append(lambda x: x + i)

Current list:

[

    lambda x: x + i,

    lambda x: x + i,

    lambda x: x + i

]

🔹 6. Loop Ends

After loop finishes:

i = 2

✅ Important:

There is only one variable i.

All lambdas refer to the same variable.

Final value of i:

2

🔹 7. First Function Call

print(funcs[0](10))

🔍 What happens?

First lambda:

lambda x: x + i

receives:

x = 10

Current value of:

i = 2

Calculation:

10 + 2

Result:

12

Printed:

12

🔹 8. Second Function Call

print(funcs[1](10))

🔍 What happens?

Second lambda is:

lambda x: x + i

Again:

x = 10

i = 2

Calculation:

10 + 2

Result:

12

Printed:

12

🎯 Final Output

12

12