Python Coding challenge - Day 479| What is the output of the following Python Code?

 

Code Explanation:

 Step 1: make_multipliers() creates lambdas in a loop

[lambda x: x * i for i in range(3)]

At each iteration, a lambda is added to the list.

But all lambdas capture the same variable i, which keeps changing in the loop.

After the loop ends, i = 2, so all lambdas refer to i = 2.

Step 2: Store in funcs

Now funcs is a list of 3 lambdas, each of which does:

lambda x: x * i  # where i is 2 for all of them

Step 3: Call each lambda with x = 2

results = [f(2) for f in funcs]

Each f is essentially:

lambda x: x * 2

So all return 2 * 2 = 4.

Output

[4, 4, 4]