Python Coding Challenge - Question with Answer (ID 070826)

 

Explanation:

🔹 Line 1: Call print()

print("42".isdecimal())

Before print() displays anything, Python first evaluates:

"42".isdecimal()

🔹 Step 1: Create the String

"42"

Python creates a string containing two characters.

Memory Representation

Index:   0   1

        ┌───┬───┐

Value:  │ 4 │ 2 │

        └───┴───┘

Notice that these are characters, not integer values.

🔹 Step 2: Call the isdecimal() Method

"42".isdecimal()

The isdecimal() method checks whether every character in the string is a decimal digit (0–9).

General Syntax

string.isdecimal()

It returns:

True → If all characters are decimal digits and the string is not empty.

False → Otherwise.

🔹 Step 3: Check Each Character

Python examines every character one by one.

First Character

'4'

Is '4' a decimal digit?

✅ Yes

Second Character

'2'

Is '2' a decimal digit?

✅ Yes

Since every character is a decimal digit, the result becomes:

True

🔹 Step 4: Execute print()

Now Python executes:

print(True)

Output

True