1. Python Errors

 modulenotfounderror no module named ‘netaddr’

netaddr is a system-independent network address manipulation library for Python. It can be used to do many manipulations at Layer 3 or 4. Below is a summary of what netaddr can be used for.

Using netaddr for Layer 3 addresses
IPv4 and IPv6 addresses, subnets, masks, prefixes
Iterating, slicing, sorting, summarising and classifying IP networks
Dealing with various ranges formats
Set based operations over IP addresses and subnets
Parsing a large variety of different formats and notations
Looking up Internet Assigned Numbers Authority IP block information
Generating Domain Name Server (DNS) reverse lookups
Supernetting and Subnetting
Using netaddr for Layer 2 addresses
Representing and manipulating MAC addresses and Extended Unique Identifier
(EUI-64)
Looking up IEEE organisational information
Generating derived IPv6 addresses

The Python ModuleNotFoundError: No module named ‘netaddr’ occurs when we forget to install the netaddr module before importing it or installed it in an incorrect environment. To solve the error, install the module by running the pip install netaddr command.

Open your terminal in your project’s root directory and install the netaddr module.

# 👇️ in a virtual environment or using Python 2
pip install netaddr

# 👇️ for python 3 (could also be pip3.10 depending on your version)
pip3 install netaddr

# 👇️ if you get permissions error
sudo pip3 install netaddr

# 👇️ if you don’t have pip in your PATH environment variable
python -m pip install netaddr

# 👇️ for python 3 (could also be pip3.10 depending on your version)
python3 -m pip install netaddr

# 👇️ for Anaconda
conda install -c conda-forge netaddr

The Python error “ModuleNotFoundError: No module named netaddr” occurs for multiple reasons:

  1. Not having the netaddr package installed by running pip install netaddr.
  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 netaddr.py which would shadow the official module.
  6. Declaring a variable named netaddr 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.

# 👇️ Checking version of python
python –version

For example, my Python version is 3.10.4

So I would install the netaddr package with pip3.10 install netaddr

pip3.10 install netaddr

# 👇️ if you get permissions error use pip3 (NOT pip3.X)
sudo pip3 install netaddr

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.

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

If the “No module named netaddr” error persists, try restarting your IDE and development server / script.

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

# 👇️ check if you have netaddr installed
pip3 show netaddr

# 👇️ if you don’t have pip setup in PATH
python3 -m pip show netaddr

The pip show netaddr 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.

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

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

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

# 👇️ use 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 netaddr in virtual environment
pip install netaddr

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

If the error persists, make sure you haven’t named a module in your project as netaddr.py because that would shadow the original netaddr module.

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

If the error is not resolved, try to uninstall the netaddr package and then install it.

# 👇️ check if you have netaddr installed
pip3 show netaddr

# 👇️ if you don’t have pip set up in PATH
python3 -m pip show netaddr

# 👇️ uninstall netaddr
pip3 uninstall netaddr

# 👇️ if you don’t have pip set up in PATH
python3 -m pip uninstall netaddr

# 👇️ install netaddr
pip3 install netaddr

# 👇️ if you don’t have pip set up in PATH
python3 -m pip install netaddr

Try restarting your IDE and development server/script.

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

pip3 install netaddr –upgrade

# 👇️ if you don’t have pip set up in PATH
python3 -m pip install netaddr –upgrade

Conclusion

The Python “ModuleNotFoundError: No module named netaddr” occurs when we forget to install the netaddr module before importing it or install it in an incorrect environment. To solve the error, install the module by running the pip install netaddr command.

Video describing how to use netaddr module in Python
Video describing how to deal with IPAddresses using netaddr Python Module
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