Python Coding Challange - Question With Answer(01140125)

 

Step-by-Step Breakdown

1. Lists a and b are defined:

a = [1, 2]
b = [3, 4]

• a is a list containing [1, 2].
• b is a list containing [3, 4].

---

2. zip Function Combines the Lists:

zipped = zip(a, b)

• The zip() function pairs corresponding elements from a and b together into tuples:
  • First element from a pairs with the first element from b.
  • Second element from a pairs with the second element from b.
• Result of zip(a, b):
  • Produces an iterator: [(1, 3), (2, 4)].

---

3. for Loop Iterates Over zipped:

for x, y in zipped:

• The for loop unpacks each tuple from the zipped iterator into x and y.
  • In the first iteration: x = 1 and y = 3.
  • In the second iteration: x = 2 and y = 4.

---

4. x + y is Calculated and Printed:

print(x + y)

• For each iteration, the sum of x and y is calculated and printed:
  • First iteration: x + y = 1 + 3 = 4 → Prints 4.
  • Second iteration: x + y = 2 + 4 = 6 → Prints 6.

---

Output:

4
6

---

Key Concepts:

1. zip Function:

   • Combines elements from two or more iterables into tuples, stopping when the shortest iterable is exhausted.
   • Produces an iterator, which can be iterated over only once.

2. for Loop with Tuple Unpacking:

   • The for x, y syntax unpacks each tuple from the zipped iterator into two variables (x and y).

3. Dynamic Calculation:

   • The x + y operation dynamically computes the sum for each pair of values.