Thursday, 23 January 2025

Python Coding challenge - Day 343| What is the output of the following Python Code?

 

Explanation:

import pandas as pd:

The pandas library is imported and given the alias pd.

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

data = {'col1': [1, 2], 'col2': [3, 4]}:

A dictionary named data is created with two keys: 'col1' and 'col2'.

The values of the keys are lists:

'col1' → [1, 2]

'col2' → [3, 4]

df = pd.DataFrame(data):

The pd.DataFrame() function is used to convert the data dictionary into a DataFrame, which is a tabular data structure in Pandas (similar to a table in a database or an Excel spreadsheet).

The resulting DataFrame, df, will look like this:

  col1  col2

0     1     3

1     2     4

print(df['col1'][1]):

df['col1']:

Accesses the column named 'col1' from the DataFrame. The result is a Pandas Series:

0    1

1    2

Name: col1, dtype: int64

df['col1'][1]:

Retrieves the value in the column 'col1' at index 1. The value at index 1 is 2.

print():

Prints the retrieved value (2) to the console.

Output:

2

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