Python Coding Challenge - Question with Answer (ID -060426)

 

Explanation:

📌 1. Importing the Library

import pandas as pd

pandas is a powerful Python library used for data analysis and manipulation.

as pd gives it a short alias (pd) so you don’t have to type pandas every time.

📌 2. Creating a Series

clcoding = pd.Series([10, 20, 30], index=[1, 2, 3])

pd.Series() creates a one-dimensional labeled array.

[10, 20, 30] → These are the data values.

index=[1, 2, 3] → These are the custom labels (indexes) assigned to each value.

👉 So the Series looks like this internally:

1    10

2    20

3    30

📌 3. Accessing Data Using iloc

print(clcoding.iloc[1])

iloc stands for integer-location based indexing.

It accesses data using position (starting from 0), NOT the index labels.

👉 Positions:

Position 0 → 10

Position 1 → 20

Position 2 → 30

So:

clcoding.iloc[1] → gets the second element → 20

📌 4. Output

20

Book: Numerical Python for Astronomy and Astrophysics