python pandas change column name
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Title: How to Change Column Names in Python Pandas: A Step-by-Step Tutorial
Introduction:
Python Pandas is a powerful library for data manipulation and analysis. One common task when working with dataframes is to rename columns. In this tutorial, we will explore how to change column names in a Pandas dataframe with code examples.
Step 1: Import Pandas
Before we start, make sure to import the Pandas library. If you haven't installed it yet, you can do so using pip install pandas. Now, let's import Pandas in your Python script or Jupyter notebook:
Step 2: Create a Sample DataFrame
Let's create a sample dataframe to work with. You can replace this with your actual dataframe:
Step 3: Change Column Names
Now, let's change the column names using the rename method. We can specify the new column names using a dictionary where keys are the old column names, and values are the new column names:
In this example, inplace=True modifies the original dataframe. If you prefer to create a new dataframe with the updated column names, you can omit inplace=True.
Step 4: Use Column Index to Rename
Alternatively, you can use the column index to rename columns. The following code snippet demonstrates this approach:
This method directly assigns a list of new column names to the columns attribute of the dataframe.
Conclusion:
Changing column names in a Pandas dataframe is a straightforward process using the rename method or by directly assigning new names to the columns attribute. By following this tutorial, you should now be able to effectively manage and update column names in your Pandas dataframes.
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