ImportError Missing Optional Dependency Openpyxl Error Solved

When you are working with pandas or any other module that need openpyxl as well. And when you try to perform some operation using those modules without installing openpyxl, then you will get ImportError: Missing optional dependency openpyxl error. The error can be easily solved by installing the openpyxl on your system. In this short article, we will discuss how we can solve ImportError: Missing optional dependency openpyxl. Use pip or conda to install openpyxl error and will discuss various methods to install the module on our system.

Solve ImportError Missing Optional Dependency Openpyxl

Some modules need openpyxl as an optional dependent module and when you are using such modules without installing openpyxl on your system, then most probably you will get this error. The error can be easily solved by installing the openpyxl module on your system.

One of the examples of getting this error is when using pandas to open an Excel file without installing the openpyxl module on your system.

import pandas as pd

data = pd.read_excel("SP500_data.xlsx")

If you haven’t installed the openpyxl module on your system, then you will get ImportError: Missing optional dependency openpyxl. Use pip or conda to install openpyxl error.

In this section, we will discuss various methods to install the module on your system so that you will not get the error anymore.

Install Openpyxl on Your System

One of the popular methods of installation modules in Python is using the pip command. The pip command helps us to install any kind of Python module. We will now use the pip command to install the openpyxl module on our system

#  using Python 2
pip install openpyxl

# using pip3 version
pip3 install openpyxl

Another way to install the module if you get a permission error is by using the following commands:

# on linux operating system
sudo pip3 install openpyxl

# on windows
pip install openpyxl --user

If the pip command is not in the path, then as alternative methods, you can use the following commands:

# using pip version
python -m pip install openpyxl

#using pip3 version
python3 -m pip install openpyxl

In case, you are using a Jupyter Notebook or Anaconda environment, you can then use the following commands:

# jupyter notebook
!pip install openpyxl

# for anaconda
conda install openpyxl

Hopefully, any of the given methods will help you to solve the problem

Installing Openpyxl on a Virtual Environment

Sometimes, it is a better option to install the dependent modules in a virtual environment. Or if you are already working on a virtual environment, then you need to install the openpyxl on a virtual environment.

First, you need to create a virtual environment. You can use the following commands to create a virtual environment.

# create virtual environment
python3 -m venv venv

Once, you have created a virtual environment, the next step is to activate the virtual environment using the following commands:

#  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

It is time to install the module in your virtual environment. You can use any of the installation methods given in the above section to install the openpyxl on your system.

pip install openpyxl

Now, you can run your original code and hopefully, you will not get the error anymore.

Uninstalling Openpyxl Module

If you already have installed openpyxl module, but still getting ImportError: Missing optional dependency openpyxl. Use pip or conda to install openpyxl error then you need to uninstall the module and then install it again because the installed module might have crashed.

You can use the following commands to uninstall the module.

pip uninstall openpyxl

Once the uninstallation is complete, you can then use any of the above-mentioned methods to install the module again on your system.

pip install openpyxl

Updating Openpyxl Module

If you are getting the ImportError: Missing optional dependency openpyxl. Use pip or conda to install openpyxl error because of the difference in the version of the installed openpyxl module, then you can upgrade the module to solve the error:

You can use any of the given methods to upgrade the module.

# using pip3 command
pip3 install openpyxl --upgrade

# if you don't have pip set up in PATH
python3 -m pip install openpyxl --upgrade

Hopefully, now you will no more get the error:

Reasons for getting ImportError Missing Optional Dependency Openpyxl Error

We have already discussed various possible solutions to solve the problem. However, here we will list all the possible reasons for getting the error.

• One of the most common reasons for getting the error is because the Openpyxl module is not yet installed on your system. Although you are not using openpyxl in your program by importing, it is essential when you want to open an Excel file using Pandas module.
• Another possible reason could be you have installed but the installation was not complete because of some reasons.
• If you have installed the openpyxl correctly but still getting the error, then you need to check the import statement and make sure that you are importing it correctly.
• Another reason could be the incorrect version. If you are running already build code then make sure you have installed the same version of module on your system.

Summary

In this short article, we discussed how we can solve ImportError: Missing optional dependency openpyxl error using various methods. The error occurs when we try to use a module that needs openpyxl without installing openpyxl on our system. Moreover, we also listed all the possible reasons for getting this error.

Related Errors

• TypeError: Only Integer Scalar Arrays Can be Converted to a Scalar Index
• ValueError: Setting an Array Element With a Sequence in Python
• ModuleNotFoundError: No Module Named ‘dtreeviz’ in Python Solved
• ImportError: Cannot Import Name ‘dtreeviz’ From ‘dtreeviz.trees’