Python Coding challenge - Day 1137| What is the output of the following Python Code?

 

Code Explanation:

🔹 1. Initializing the List

funcs = []

An empty list funcs is created

This list will store functions

🔹 2. Starting the Loop

for i in range(3):

Loop runs 3 times with values:

i = 0, 1, 2

🔹 3. Defining the Function Inside Loop

def f():

    return i

A function f is defined in each iteration

⚠️ Important: The function does not store the current value of i immediately

Instead, it refers to i (late binding)

👉 This means:

All functions will look up i when they are called, not when they are created

🔹 4. Appending Function to List

funcs.append(f)

The function f is added to the list

After loop ends, funcs contains 3 functions

🔹 5. After Loop Ends

Final value of i is:

i = 2

All functions refer to this same i

🔹 6. Calling the Functions

print([f() for f in funcs])

Each function is called one by one

Each function returns the current value of i, which is 2

🔹 ✅ Final Output

[2, 2, 2]

Book: 900 Days Python Coding Challenges with Explanation