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How to Remove Duplicate Values of a Variable in Python

Remove Duplicate Values

Condition for Removing Duplicate Values of a Variable in Python

  • Description:
    To remove duplicate values from a variable (column) in a dataset using Python, you typically use the pandas library.

    The pandas library provides powerful tools for handling and manipulating datasets.

    Steps: 1. Import pandas
    2. Load the dataset
    3. Use the drop_duplicates() method
    4. Store the result
Step-by-Step Process
  • Import pandas:
    First, you need to import the pandas library.
  • Load the dataset:
    You can load your dataset into a pandas DataFrame using pd.read_csv() (if the dataset is in a CSV file), or other methods depending on the format (e.g., Excel, SQL, etc.).
  • Use the drop_duplicates() method:
    The drop_duplicates() method is used to remove duplicate rows based on one or more columns (variables). You can specify which column to check for duplicates using the subset parameter.
  • Store the result:
    You can either modify the original DataFrame in place or create a new DataFrame with the duplicates removed.
Sample Source Code
  • # Code for Remove Duplicates

    import pandas as pd

    data = {'Name': ['Akash', 'Bharat', 'Akash', 'Charlie', 'Bharat'],
    'Age': [25, 30, 25, 35, 30],
    'City': ['New York', 'Los Angeles', 'New York', 'Chicago', 'Los Angeles']}

    df = pd.DataFrame(data)

    print("Original DataFrame:")
    print(df)

    # Remove duplicates
    df_no_duplicates = df.drop_duplicates()

    # DataFrame after removing duplicates
    print("\nDataFrame after removing duplicates: ")
    print(df_no_duplicates)
Screenshots
  • Remove Duplicate Values