Ubuntu 18.04 installs pyenv, pyenv-virtualenv, virtualenv, Numpy, SciPy, Pillow, Matplotlib

1. There are many Python version management tools at present. Pyenv is a relatively easy-to-use one. The installation is as follows:

enter:

git clone https://github.com/pyenv/pyenv.git ~/.pyenv
echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bashrc
echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bashrc
echo -e 'if command -v pyenv 1>/dev/null 2>&1; then\n eval "$(pyenv init -)"\nfi' >> ~/.bashrc
source ~/.bashrc

If there are no problems, the installation is successful. During the installation process, there will be prompts about missing dependencies and packages. Install the packages that are missing.

2. Install the pyenv plug-in pyenv-virtualenv to manage the virtual environment. After the installation is complete, set it up.

3. Install virtualenv to the system environment and use it with pip

4. Install Numpy

Numpy is the core library for scientific computing in Python. It provides high-performance multidimensional array objects and related tools. The installation is shown in the figure.

5. Install SciPy, which is based on Numpy and provides a large number of functions for calculating and operating arrays. These functions are very useful for different types of scientific and engineering calculations. The installation is as shown in the figure.

6. Install Pillow, which is derived from PIL (Python Imaging Library), an image processing library for Python. The installation is as shown in the figure.

7. Install Matplotlib, which is a drawing library. Install it as shown in the figure.

Summarize

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