Pandas DataFrame equals() Method – Be on the Right Side of Change (original) (raw)

Preparation

Before any data manipulation can occur, one (1) new library will require installation:

• The Pandas library enables access to/from a DataFrame.

To install this library, navigate to an IDE terminal. At the command prompt ($), execute the code below. For the terminal used in this example, the command prompt is a dollar sign ($). Your terminal prompt may be different.

$ pip install pandas

Hit the <Enter> key on the keyboard to start the installation process.

If the installations were successful, a message displays in the terminal indicating the same.

Feel free to view the PyCharm installation guide for the required library.

• How to Install Pandas on PyCharm

Add the following code to the top of each code snippet. This snippet will allow the code in this article to run error-free.

import pandas as pd

💡 Note: To follow along with the examples below, click here to download the finxters.csv file of auto-generated dummy user data. Move this file to the current working directory.

The equals() method compares two (2) DataFrames/Series against each other to determine if they have an identical shape and elements. If identical return True, otherwise return False.

The syntax for this method is as follows:

DataFrame.equals(other)

For this example, we have two (2) DataFrames containing grades for three (3) students.

df_scores1 = pd.DataFrame({'Micah': [91, 58, 73], 'Bob': [53, 87, 46], 'Chloe': [60, 54, 61]})

df_scores2 = pd.DataFrame({'Micah': [91, 58, 73], 'Bob': [53, 87, 46], 'Chloe': [60, 54, 61]})

result = df_scores1.equals(df_scores2) print(result) print(df_scores1.shape) print(df_scores2.shape)

• Line [1-2] creates two (2) DataFrames.
• Line [3] compares df_scores1 against df_scores2 testing the shape and elements. The outcome saves to result (True/False).
• Line [4] outputs the result to the terminal.
• Line [5-6] confirms the shape of the DataFrames is equal by outputting the results to the terminal.

Output

True (3, 3) (3, 3)

More Pandas DataFrame Methods

Feel free to learn more about the previous and next pandas DataFrame methods (alphabetically) here:

Also, check out the full cheat sheet overview of all Pandas DataFrame methods.