Install python packages (pip install)
# install pip on Ubuntu/Linux command line
sudo apt-get install python-pip
# get latest version of the pip package installer
python -m pip install --upgrade pip
# standard system-wide installation
python -m pip install numpy
# alternatively: install local user version
# doesn’t require root admin permissions
pip install --user numpy
# add to your .bashrc file (path to local installation)
export PATH="$PATH:/home/myUserName/.local/bin"
pip show numpy
Name: numpy
Version: 1.20.1
Summary: NumPy is the fundamental package for array computing with Python.
Home-page: https://www.numpy.org
Author: Travis E. Oliphant et al.
Author-email: None
License: BSD
Location: /usr/lib/python3.7/site-packages
Requires:
Required-by: scipy, pandas, matplotlib, biopython
# start Python
python
# get package version
import numpy
print(numpy.__version__)
1.20.1
import matplotlib
print(matplotlib.__version__)
3.3.4
# get package location
import numpy
print(numpy.__file__)
/usr/lib/python3.7/site-packages/numpy/__init__.py
# compare package versions
# example: check if numpy version is larger than 1.20
# Don't use "LooseVersion": DeprecationWarning: distutils Version classes are deprecated. Use packaging.version instead.
from packaging import version
version.parse(numpy.__version__) > version.Version('1.20')
True
https://docs.python.org/3/installing/index.html
https://packaging.pypa.io/en/latest/
http://www.scipy.org/install.html
https://packaging.pypa.io/en/latest/version.html