Troubleshooting Guide: How to Fix Modulenotfounderror - No Module Named 'Imblearn' in Python

In this guide, we will explore the steps to resolve the ModuleNotFoundError - No module named 'imblearn' error in Python. The imbalanced-learn library, commonly known as imblearn, is a popular Python package that provides various techniques for dealing with imbalanced datasets. If you encounter this error, it usually means that the imblearn package is not installed or not properly recognized by your Python environment.

Table of Contents

  1. Prerequisites
  2. Step 1: Verify Python and Pip
  3. Step 2: Install Imbalanced-Learn
  4. Step 3: Verify the Installation
  5. Step 4: Check Your Python Environment
  6. FAQ


Before proceeding, ensure that you have the following installed on your system:

  • Python 3.6 or higher
  • Pip (Python package manager)

Step 1: Verify Python and Pip

First, confirm that Python and Pip are correctly installed and available in your system's PATH. Open a terminal or command prompt and run the following commands:

python --version
pip --version

Both commands should return their respective version numbers. If you encounter any issues, consider reinstalling Python and Pip.

Step 2: Install Imbalanced-Learn

To install the imbalanced-learn package, run the following command:

pip install imbalanced-learn

This command should successfully install imbalanced-learn in your Python environment. If you encounter any issues, refer to the package's official installation guide.

Step 3: Verify the Installation

To confirm that imbalanced-learn is installed correctly, open a Python interpreter and run the following commands:

import imblearn

These commands should output the version number of the installed imbalanced-learn package. If you still encounter the ModuleNotFoundError, proceed to the next step.

Step 4: Check Your Python Environment

If you are still experiencing the ModuleNotFoundError, verify that you are using the correct Python environment. If you have multiple Python installations or virtual environments, it's possible that imbalanced-learn was installed in a different environment.

  1. Run which python (or where python on Windows) to find the active Python executable's location.
  2. Compare the output with the location of the Python environment where imbalanced-learn was installed.
  3. If necessary, activate the correct Python environment or install imbalanced-learn in the desired environment.


Q1: Can I use imbalanced-learn with Python 2?

imbalanced-learn no longer supports Python 2. It is recommended to use Python 3.6 or higher. For more information, refer to the imbalanced-learn installation guide.

Q2: How do I check if imbalanced-learn is already installed in my Python environment?

You can check the installed packages in your Python environment using the following command:

pip list

Look for imbalanced-learn in the output list.

Q3: Can I use imbalanced-learn with other machine learning libraries, such as scikit-learn?

Yes, imbalanced-learn is compatible with scikit-learn and other popular machine learning libraries. In fact, imbalanced-learn is built on top of scikit-learn and follows a similar API.

Q4: Can I install a specific version of imbalanced-learn?

Yes, you can install a specific version of imbalanced-learn using the following command:

pip install imbalanced-learn==<version>

Replace <version> with the desired version number.

Q5: I still cannot resolve the ModuleNotFoundError. What should I do?

If you have followed all the steps and still encounter the error, consider seeking help from the imbalanced-learn GitHub repository or the Python community. Provide as much information as possible about your system and the steps you have already taken to resolve the issue.

Great! You’ve successfully signed up.

Welcome back! You've successfully signed in.

You've successfully subscribed to

Success! Check your email for magic link to sign-in.

Success! Your billing info has been updated.

Your billing was not updated.