How Can I Import a CSV File into a List in Python?

Importing a CSV File into a List in Python

To import a CSV (Comma-Separated Values) file into a list in Python, you can utilize the built-in csv module. This module facilitates reading and writing of CSV files.

Using the csv Module

Here's a simple example of how to import a CSV file into a list utilizzando the csv module:

import csv

# Open the CSV file
with open('file.csv', newline='') as f:

    # Initialize the CSV reader
    reader = csv.reader(f)

    # Convert the contents of the CSV file into a list
    data = list(reader)

# Print the list of records
print(data)

The output will be a list of lists containing each row in the CSV file. For example, if the CSV file contains the following lines:

This is the first line,Line1
This is the second line,Line2
This is the third line,Line3

The data list will be:

[['This is the first line', 'Line1'], ['This is the second line', 'Line2'], ['This is the third line', 'Line3']]

Converting to Tuples

If you require a list of tuples instead of lists, you can use a list comprehension to convert the list to tuples:

# Convert `data` from a list of lists to a list of tuples
data = [tuple(row) for row in data]

Notes for Python 2

These examples are for Python 3. For Python 2, you may need to use the rb mode when opening the file and the your_list variable instead of data:

with open('file.csv', 'rb') as f:
    reader = csv.reader(f)
    your_list = list(reader)

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