Explain the concept of CSV format where data is separated by commas.

CSV (Comma-Separated Values) is a simple text format for storing tabular data, where each line corresponds to a record, and fields within the line are separated by commas.

Example of CSV:

Name,Age,City
Ivan,30,Moscow
Anna,25,Saint Petersburg

Format features:

• Each line is a separate record.
• Fields are separated by commas.
• If a field contains a comma or quotes, it is enclosed in double quotes.
• The format is easy to read and supported by many programs.

In Python, it is convenient to use the csv module to work with CSV:

import csv

with open('data.csv', newline='', encoding='utf-8') as csvfile:
    reader = csv.DictReader(csvfile)
    for row in reader:
        print(row['Name'], row['Age'], row['City'])

CSV is widely used for data exchange between systems due to its simplicity and universality.