ModuleNotFoundError: No module named 'openpyxl' in Python

# ModuleNotFoundError: No module named 'openpyxl' in Python

The Python "ModuleNotFoundError: No module named 'openpyxl'" occurs when we forget to install the openpyxl module before importing it or install it in an incorrect environment.

To solve the error, install the module by running the pip install openpyxl command.

Open your terminal in your project's root directory and install the openpyxl module.

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# 👇️ In a virtual environment or using Python 2
pip install openpyxl

# 👇️ For Python 3 (could also be pip3.10 depending on your version)
pip3 install openpyxl

# 👇️ If you get a permissions error
sudo pip3 install openpyxl
pip install openpyxl --user

# 👇️ If you don't have pip in your PATH environment variable
python -m pip install openpyxl

# 👇️ For Python 3 (could also be pip3.10 depending on your version)
python3 -m pip install openpyxl

# 👇️ Using py alias (Windows)
py -m pip install openpyxl

# 👇️ For Anaconda
conda install -c anaconda openpyxl

# 👇️ For Jupyter Notebook
!pip install openpyxl

After you install the openpyxl package, try importing it like:

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import datetime
from openpyxl import Workbook

wb = Workbook()

ws = wb.active

ws['A1'] = 42

ws.append([1, 2, 3])

ws['A2'] = datetime.datetime.now()

wb.save("sample.xlsx")

The error occurs for multiple reasons:

1. Not having the openpyxl package installed by running pip install openpyxl.
2. Installing the package in a different Python version than the one you're using.
3. Installing the package globally and not in your virtual environment.
4. Your IDE running an incorrect version of Python.
5. Naming your module openpyxl.py which would shadow the official module.
6. Declaring a variable named openpyxl which would shadow the imported variable.

If the error persists, get your Python version and make sure you are installing the package using the correct Python version.

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python --version

For example, my Python version is 3.10.4, so I would install the openpyxl package with pip3.10 install openpyxl.

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pip3.10 install openpyxl

# 👇️ If you get a permissions error use pip3 (NOT pip3.X)
sudo pip3 install openpyxl

Notice that the version number corresponds to the version of pip I'm using.

If the PATH for pip is not set up on your machine, replace pip with python3 -m pip:

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# 👇️ Make sure to use your version of Python, e.g. 3.10
python3 -m pip install openpyxl

If the error persists, try restarting your IDE and development server/script.

# Check if the package is installed

You can check if you have the openpyxl package installed by running the pip show openpyxl command.

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# 👇️ Check if you have `openpyxl` installed
pip show openpyxl

# 👇️ If you don't have pip set up in PATH
python -m pip show openpyxl

The pip show openpyxl command will either state that the package is not installed or show a bunch of information about the package, including the location where the package is installed.

# Make sure your IDE is using the correct Python version

If the package is not installed, make sure your IDE is using the correct version of Python.

For example, In VSCode, you can press CTRL + Shift + P or (⌘ + Shift + P on Mac) to open the command palette.

Then type "Python select interpreter" in the field.

Then Select the correct Python version from the dropdown menu.

# Install the package in a Virtual Environment

If you are using a virtual environment, make sure you are installing openpyxl in your virtual environment and not globally.

You can try creating a virtual environment if you don't already have one.

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# 👇️ Use the correct version of Python when creating VENV
python3 -m venv venv

# 👇️ Activate on Unix or MacOS
source venv/bin/activate

# 👇️ Activate on Windows (cmd.exe)
venv\Scripts\activate.bat

# 👇️ Activate on Windows (PowerShell)
venv\Scripts\Activate.ps1

# 👇️ Install `openpyxl` in a virtual environment
pip install openpyxl

If the python3 -m venv venv command doesn't work, try the following 2 commands:

• python -m venv venv
• py -m venv venv

Your virtual environment will use the version of Python that was used to create it.

You also shouldn't be declaring a variable named openpyxl as that would also shadow the original module.

# Try reinstalling the package

If the error is not resolved, try to uninstall the openpyxl package and then reinstall it.

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# 👇️ Check if you have `openpyxl` installed
pip show openpyxl

# 👇️ If you don't have pip set up in PATH
python -m pip show openpyxl

# 👇️ Uninstall openpyxl
pip uninstall openpyxl

# 👇️ If you don't have pip set up in PATH
python -m pip uninstall openpyxl

# 👇️ Install openpyxl
pip install openpyxl

# 👇️ If you don't have pip set up in PATH
python -m pip install openpyxl

Try restarting your IDE and development server/script.

You can also try to upgrade the version of the openpyxl package.

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pip install openpyxl --upgrade

# 👇️ If you don't have pip set up in PATH
python -m pip install openpyxl --upgrade

# Table of Contents

1. Install openpyxl on Windows
2. Install openpyxl on macOS or Linux
3. Install openpyxl in Visual Studio Code
4. Install openpyxl in PyCharm
5. Install openpyxl in Anaconda
6. Install openpyxl in Jupyter Notebook

# Install openpyxl on Windows

To install the openpyxl module on Windows:

1. Type CMD in the search bar and open the Command Prompt application.
2. Type pip install openpyxl and press Enter.

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pip install openpyxl

# 👇️ For Python 3
pip3 install openpyxl

# 👇️ If you don't have pip in your PATH environment variable
python -m pip install openpyxl

# 👇️ For Python 3
python3 -m pip install openpyxl

# 👇️ Using py alias
py -m pip install openpyxl

# 👇️ If you get a permissions error
pip install openpyxl --user

# 👇️ For Anaconda
conda install -c anaconda openpyxl

If the command doesn't succeed, try running CMD as an administrator.

If you get the error 'pip' is not recognized as an internal or external command, use the python -m command when installing openpyxl.

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python -m pip install openpyxl

python3 -m pip install openpyxl

py -m pip install openpyxl

Alternatively, you can install the openpyxl module in a virtual environment:

1. Open the root directory of your project.
2. Press Shift and right-click in Explorer.

3. Click on "Open PowerShell window here".
4. Run the following commands.

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# 👇️ Might also be: "python3 -m venv venv"
python -m venv venv

# 👇️ Activate on Windows (PowerShell)
venv\Scripts\Activate.ps1

# 👇️ Activate on Windows (cmd.exe)
venv\Scripts\activate.bat

# 👇️ Install `openpyxl` in your virtual environment
pip install openpyxl

If the python -m venv venv command doesn't work, try the following 2 commands:

• python3 -m venv venv
• py -m venv venv.

If you see an error message that ps1 cannot be loaded because running scripts is disabled on this system, run the following command, type "yes" when prompted and rerun the activation command.

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Set-ExecutionPolicy RemoteSigned -Scope CurrentUser

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pip show openpyxl
pip3 show openpyxl

python -m pip show openpyxl
python3 -m pip show openpyxl

The pip show openpyxl command will either state that the package is not installed or show a bunch of information about the package, including the location where the package is installed.

# Install openpyxl on macOS or Linux

To install openpyxl on macOS or Linux:

1. Search for "terminal" and start the application.
2. Type pip install openpyxl and press Enter.

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pip install openpyxl

# 👇️ For Python 3
pip3 install openpyxl

# 👇️ If you get a permissions error
sudo pip3 install openpyxl

# 👇️ If you don't have pip in your PATH environment variable
python -m pip install openpyxl

# 👇️ For Python 3
python3 -m pip install openpyxl

# 👇️ Alternative if you get a permissions error
pip install openpyxl --user

# 👇️ For Anaconda
conda install -c anaconda openpyxl

If you get an error that pip isn't found, use the python -m command.

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python -m pip install openpyxl

python3 -m pip install openpyxl

If you get a permissions error, prefix the command with sudo.

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sudo pip install openpyxl

sudo pip3 install openpyxl

Alternatively, you can install the openpyxl package in a virtual environment:

1. Open your terminal in the root directory of your project.
2. Run the following commands.

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# 👇️ Could also be "python -m venv venv"
python3 -m venv venv

# 👇️ Activate virtual env on macOS or Linux
source venv/bin/activate

# 👇️ Install `openpyxl` in your virtual environment
pip install openpyxl

Your virtual environment will use the version of Python that was used to create it.

You can use the pip show command to verify openpyxl has been installed successfully.

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pip show openpyxl
pip3 show openpyxl

python -m pip show openpyxl
python3 -m pip show openpyxl

The pip show openpyxl command will either state that the package is not installed or show a bunch of information about the package.

# Install openpyxl in Visual Studio Code

To install openpyxl in Visual Studio Code:

1. Press CTRL + ` (Backtick) on your keyboard to open the terminal.
2. Run the pip install openpyxl command to install the openpyxl module.

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pip install openpyxl

# 👇️ For Python 3
pip3 install openpyxl

# 👇️ If you get a permissions error
sudo pip3 install openpyxl

# 👇️ If you don't have pip in your PATH environment variable
python -m pip install openpyxl

# 👇️ For Python 3
python3 -m pip install openpyxl

# 👇️ Using py alias
py -m pip install openpyxl

# 👇️ Alternative if you get a permissions error
pip install openpyxl --user

When installing Python modules in Visual Studio code, make sure that your IDE is configured to use the correct Python version.

Press CTRL+Shift+P or (⌘ + Shift + P on Mac) to open the command palette.

Then type "Python select interpreter" in the field.

Then Select the correct Python version from the dropdown menu.

You can use the python --version command if you need to get your version of Python.

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python --version
python3 --version

You can also try creating a virtual environment if you don't already have one.

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# 👇️ Could also be "python -m venv venv" or "py -m venv venv"
python3 -m venv venv

# 👇️ Activate on Unix or MacOS
source venv/bin/activate

# 👇️ Activate on Windows (cmd.exe)
venv\Scripts\activate.bat

# 👇️ Activate on Windows (PowerShell)
venv\Scripts\Activate.ps1

# 👇️ Install `openpyxl` in your virtual environment
pip install openpyxl

Your virtual environment will use the version of Python that was used to create it.

# Install openpyxl in PyCharm

To install openpyxl in PyCharm:

1. Press Alt+F12 on your keyboard to open the terminal.
2. Run the pip install openpyxl command to install the openpyxl module.

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pip install openpyxl

# 👇️ For Python 3
pip3 install openpyxl

# 👇️ If you get a permissions error
sudo pip3 install openpyxl

# 👇️ If you don't have pip in your PATH environment variable
python -m pip install openpyxl

# 👇️ For Python 3
python3 -m pip install openpyxl

# 👇️ Using py alias
py -m pip install openpyxl

# 👇️ Alternative if you get a permissions error
pip install openpyxl --user

Alternatively, you can use the IDE itself to install the module.

1. Click on "File" > "Settings" > "Project" > "Python Interpreter".
2. Click on the + icon and type openpyxl.
3. Click on "Install Package".

Click on "File" > "Settings" > "Project" > "Python Interpreter".

Then Select the correct Python version from the dropdown menu.

You can use the python --version command if you need to get your version of Python.

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python --version
python3 --version

# Install openpyxl in Anaconda

To install openpyxl in Anaconda:

1. Open your Anaconda Navigator.
2. Click on "Environments" and select your project.
3. Type openpyxl in the search bar to the right.
4. Tick the openpyxl package and click on "Apply".

Alternatively, you can install the openpyxl package with a command.

If you are on Windows, search for "Anaconda Prompt" and open the application.

If you are on macOS or Linux, open your terminal.

Run the following command to install the openpyxl package.

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# 👇️ Using conda
conda install -c anaconda openpyxl

# 👇️ Alternatively use `pip`
pip install openpyxl

# 👇️ For Python 3
pip3 install openpyxl

# 👇️ If you get a permissions error
sudo pip3 install openpyxl

# 👇️ If you don't have pip in your PATH environment variable
python -m pip install openpyxl

# 👇️ For Python 3
python3 -m pip install openpyxl

# 👇️ Using py alias
py -m pip install openpyxl

# 👇️ Alternative if you get a permissions error
pip install openpyxl --user

Click on the following article if you need to install a specific version of the package using Anaconda.

# Install openpyxl in Jupyter Notebook

To install openpyxl in Jupyter Notebook:

1. Open your terminal and type "jupyter notebook".

2. Click on "New" and then "Terminal" in the browser tab.

3. Type pip install openpyxl and press Enter.

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# 👇️ Using pip
pip install openpyxl

# 👇️ For Python 3
pip3 install openpyxl

# 👇️ If you get a permissions error
sudo pip3 install openpyxl

# 👇️ If you don't have pip in your PATH environment variable
python -m pip install openpyxl

# 👇️ For Python 3
python3 -m pip install openpyxl

# 👇️ Using py alias
py -m pip install openpyxl

# 👇️ Using conda
conda install -c anaconda openpyxl

# 👇️ Alternative if you get a permissions error
pip install openpyxl --user

Alternatively, you can use the Python ipykernel.

1. Open your terminal and type "jupyter notebook".

2. Click on "New" and then click on "Python 3 (ipykernel)".

3. Type !pip install openpyxl and click on "Run".

Note that the pip install command must be prefixed with an exclamation mark if you use this approach.

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!pip install openpyxl

Once you type the command, click "Run" to install the openpyxl module.

If you get a permissions error, e.g. "[WinError: 5] Access is denied", add the --user option to the installation command.

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!pip install openpyxl --user

If the error persists, try to restart the Jupyter Kernel and rerun the command.