# Python installation from the user level

# Installing a new Python version in your home directory

Step 1: To install a new version of the Python software from the user's level, you must first start the interactive mode:

srun --pty /bin/bash

Step 2. Then we download the software version we are interested in, for example Python-3.9.0

 wget https://www.python.org/ftp/python/3.9.0/Python-3.9.0a6.tgz

Step 3: Unpack the package

tar -zxvf Python-3.5.1.tgz

Step 4: Enter the Python source code directory

cd Python-3.9.0a6

Step 5: Run the configure and select the directory where the python will be installed.

./configure --prefix=/home/users/${USER}/python/

Step 6: Compile with installation

make
make install

Step 7: Check the installed version

$ /home/users/${USER}/python/bin/python3 -V
Python 3.9.0

TIP

IMPORTANT: Refer to the new python installed in your scripts.

Make sure there is a reference to the new python at the top of each script you write, the first line should look like this:

#!/home/users/${USER}/python/bin/python3

To install Python packages from the user's level, you must first start the interactive mode:

srun --pty /bin/bash

After receiving the interactive console we load the Python module:

module load python/version

Python packages are installed using pip:

pip install --user package_name

The package will be installed in your home directory:

 /home/users/user_name/.local/lib/python_version/site-packages/

Add the installed package to the Python variable:

export PYTHONPATH=$PYTHONPATH:/home/users/user_name/.local/lib/python_version/site-packages/

The last step is to check if you can import the installed package by running Python and executing the command:

import package_name