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add a column to a CSV file in Python

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umar zia answered on February 22, 2021 Popularity 9/10 Helpfulness 4/10

answer add a column to a CSV file in Python

related how to add new column in csv file using pandas

related add new column to an csv file and fill it then save the file

add a column to a CSV file in Python

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df = pd.read_csv("sample.csv")
df["new_column"] = "abc"
df.to_csv("sample.csv", index=False)

Popularity 9/10 Helpfulness 4/10 Language python

Source: Grepper

Tags: add csv file python

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Contributed on Aug 15 2022

umar zia

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how to add new column in csv file using pandas

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import pandas as pd
csv_input = pd.read_csv('input.csv')
csv_input['Berries'] = csv_input['Name']
csv_input.to_csv('output.csv', index=False)

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Source: stackoverflow.com

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Contributed on Feb 22 2021

AMi

0 Answers Avg Quality 2/10

add new column to an csv file and fill it then save the file

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import csv

# Define the function abc() - replace this with your own function implementation
def abc(value):
    return value * 2  # For example, doubling the input value

def add_new_column(input_file, output_file):
    # Read the CSV file and store its data in a list of dictionaries
    with open(input_file, 'r') as csvfile:
        reader = csv.DictReader(csvfile)
        data = list(reader)

    # Add a new column to the data and fill it with the result of abc() function
    for row in data:
        new_column_value = abc(int(row['SomeColumn']))  # Replace 'SomeColumn' with the name of the column you want to use as input
        row['NewColumn'] = new_column_value

    # Write the modified data back to the CSV file with the new column
    fieldnames = reader.fieldnames + ['NewColumn']
    with open(output_file, 'w', newline='') as csvfile:
        writer = csv.DictWriter(csvfile, fieldnames=fieldnames)
        writer.writeheader()
        writer.writerows(data)

if __name__ == "__main__":
    input_csv_file = "input.csv"  # Replace with the name of your input CSV file
    output_csv_file = "output.csv"  # Replace with the desired name of your output CSV file
    add_new_column(input_csv_file, output_csv_file)
    print("New column added and CSV file saved successfully!")

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Source: chat.openai.com

Tags: add csv file fill python save

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Contributed on Jul 20 2023

Hussain Abbas

0 Answers Avg Quality 2/10

add a column to a CSV file in Python

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