Python Coding Challange - Question with Answer (01160625)

 

Step-by-step Explanation

1. list(range(10))

Creates a list of numbers from 0 to 9:

a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

2. a[2:8:3]

This is list slicing, with the format:

[start : stop : step]

• start = 2 → Start from index 2 → element 2

• stop = 8 → Go up to (but not including) index 8

• step = 3 → Take every 3rd element

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 Indices from 2 to 7 are:

Index:    2   3   4   5   6   7
Element:  2   3   4   5   6   7

If we take every 3rd element starting from index 2:

• First: index 2 → 2

• Then: index 2 + 3 = 5 → 5

• Next would be 5 + 3 = 8, which is excluded (stop is 8)

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✅ Final Output:

[2, 5]

Application of Python Libraries in Astrophysics and Astronomy
https://pythonclcoding.gumroad.com/l/aphll