ItsMyCode: ModuleNotFoundError: No module named ‘numpy’

In Python, if you try to import numpy without installing the module using pip, you will get ModuleNotFoundError: No module named ‘numpy’ error.

In this tutorial, let’s look at installing the numpy module correctly in different operating systems and solve no module named numpy error.  

ModuleNotFoundError: No module named ‘numpy’ 

Numpyare not a built-in module (it doesn’t come with the default python installation) in Python; you need to install it explicitly using the pip installer and then use it.

There are various reasons why we get the ModuleNotFoundError: No module named ‘numpy’ error

• Trying to use NumPy without having the numpy package installed
• The IDE you are using is not set to the incorrect Python version.
• You are using the virtual environment and not installed the numpy in a virtual environment
• Installing the NumPy package in a different version of Python than the one which is used currently.
• Declaring a variable name as numpy

If you are getting an error installing pip, checkout pip: command not found to resolve the issue.

Install NumPy in OSX/Linux 

The recommended way to install the NumPy module is using pip or pip3 for Python3 if you have installed pip already.

Using Python 2

$ sudo pip install numpy

Using Python 3

$ sudo pip3 install numpy

Alternatively, if you have easy_install in your system, you can install NumPy using the below command.

Using easy install

$ sudo easy_install -U numpy

For CentOs

$ yum install numpy

For Ubuntu

To install the NumPy module on Debian/Ubuntu :

$ sudo apt-get install python-numpy

Install NumPy in Windows

In the case of windows, you can use pip or pip3 based on the Python version; you have to install the NumPy module.

$ pip3 install numpy

If you have not added the pip to the environment variable path, you can run the below command in Python 3, which will install the NumPy module. 

$ py -m pip install numpy

Install NumPy in Anacodna

If you use conda, you can install NumPy from the defaults or conda-forge channels:

# Best practice, use an environment rather than install in the base env
conda create -n my-env
conda activate my-env
# If you want to install from conda-forge
conda config --env --add channels conda-forge
# The actual install command
conda install numpy