Python Coding challenge - Day 640| What is the output of the following Python Code?

 

Code Explanation:

1. Function Definition

def averages():

Defines a function named averages.

It will return a generator that computes the average of corresponding elements from two lists.

2. List Initialization

    a = [1.2, 2.5, 3.3]

    b = [1.8, 2.1, 3.7]

Two lists a and b are defined:

a = [1.2, 2.5, 3.3]

b = [1.8, 2.1, 3.7]

These could represent values like measurements, ratings, etc.

3. Generator Expression for Averages

    return (round((x + y) / 2, 1) for x, y in zip(a, b))

zip(a, b) pairs the elements from lists a and b:

Pairs: (1.2, 1.8), (2.5, 2.1), (3.3, 3.7)

(x + y) / 2: Computes the average of each pair.

round(..., 1): Rounds each average to 1 decimal place.

return (...): Returns a generator that yields these rounded averages.

4. Consuming the Generator with list()

print(list(averages()))

averages() returns the generator.

list(...) converts the generator into a list by evaluating all items.

print(...) prints the resulting list.

5. Step-by-Step Calculation

Pair Average Rounded (1 decimal)

(1.2, 1.8) (1.2 + 1.8) / 2 = 1.5 1.5

(2.5, 2.1) (2.5 + 2.1) / 2 = 2.3 2.3

(3.3, 3.7) (3.3 + 3.7) / 2 = 3.5 3.5

Final Output

[1.5, 2.3, 3.5]

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