Python Coding Challenge - Question with Answer (ID 080826)

 

Code Explanation:

🔹 Line 1: Create the List

[1, 2, 3]

This list contains three integers:

1    2    3

Python needs to convert these integers into strings before joining them.

🔹 Step 2: Apply map()

map(str, [1, 2, 3])

map() applies the str function to each element of the list.

So:

1 → "1"

2 → "2"

3 → "3"

Conceptually, the result is:

"1", "2", "3"

🔹 Step 3: Understand str

str(1) → "1"

str(2) → "2"

str(3) → "3"

The important point is that the numbers are now strings, not integers.

🔹 Step 4: Use join()

"-".join(...)

The string:

"-"

acts as the separator.

It places - between every string.

So:

"1" + "-" + "2" + "-" + "3"

becomes:

"1-2-3"

🔹 Step 5: Execute print()

The final string is:

"1-2-3"

So:

print("1-2-3")

produces:

1-2-3

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