Python Coding Challange - Question With Answer(01060225)

 

Explanation:

1. Step 1: a = [1, 2, 3, 4, 5]

   • A list a is created with the values [1, 2, 3, 4, 5].

2. Step 2: b = a

   • The variable b is assigned to reference the same list as a.
   • In Python, lists are mutable and are passed by reference, meaning both a and b point to the same memory location.

3. Step 3: b[0] = 0

   • Here, the first element of the list b is modified to 0.
   • Since a and b reference the same list, this change is reflected in a as well.

4. Step 4: print(a)

   • The list a now reflects the change made through b.
   • Output: [0, 2, 3, 4, 5]

Key Concept:

• Mutable Objects (like lists): Changes made through one reference affect all other references to the same object.
• Both a and b are pointing to the same list in memory, so any changes to b will also appear in a.