Anaconda, python and pip Quick practical guide

Complete and practical guide how to setup python project

Table of contents:

• Anaconda, python, pip. Quick practical guide
  • Download
  • Install
  • Environments
  • Packages
  • Own packages
  • Remove anaconda
  • Other languages
  • Projects
• PyCharm configuration
• PyBuilder configuration
  • Urls
  • Install
  • Create new project
  • Existing project
  • Describing available tasks
  • Providing parameters
  • IDE integration
  • Travis CI integration
  • Coveralls integration

Download anaconda

Download anaconda from https://www.continuum.io/downloads for windows/mac/linux with python2/python3

Install anaconda

Follow the instructions and install it.

Check "conda" and "python" are accessible from the command line:

conda --help
conda --version
conda list
python --version

Update anaconda to latest version:

conda update conda

Anaconda Environments

Create environment

conda create -n [env_name] python=[python_version]

Examples:

conda create --name python2 pip
conda create --name python3 python=3.6

• python2, python3 - names of environments that are created by default in the envs directory in your conda directory
• pip - package to be installed to the env. You can specify as many packages as you need in the end of command line, separated by space
• python= - gives possibility to specify python version to be used as a default in the env

List envs

conda info --envs

Activate/Deactivate environment

(Linux)

source activate [env_name]

and (Windows)

activate [env_name]

Example: source activate python3 and activate python3

Check that packages are from the activated env: Examples:

python --version
pip --version

to deactivate deactivate

Make exact copy of the env

conda create --name <new env name> --clone <existing env name>

Example:

conda create --name python3copy --clone python3

Delete env completely

conda remove --name <env name> --all

Example:

conda remove --name python3 --all

List env packages installed

conda list

Export current env to file

conda list --explicit > <filename>

Example:

conda list --explicit > DEV/env.txt

Create own env file

Example: file

environment.yaml

Content:

name: stats
dependencies:
  - numpy
  - pandas
  - python=3.6
  - pip:
    - Flask-Testing

Import env from file

conda create --name <env> --file <filename>

Example

conda create --name python3new --file environment.yaml

Windows: Activate/Deactivate ENV variables for the env

cd <anaconda folder>/envs/<env name>
mkdir .\etc\conda\activate.d
mkdir .\etc\conda\deactivate.d
type NUL > .\etc\conda\activate.d\env_vars.bat
type NUL > .\etc\conda\deactivate.d\env_vars.bat

Edit .\etc\conda\activate.d\env_vars.bat

set MY_ANACONDA_TEST='Hello World'

Edit .\etc\conda\deactivate.d\env_vars.bat

set MY_ANACONDA_TEST=

Check it works on activate/deactivate the environment

Linux/Mac: Activate/Deactivate ENV variables for the env

cd <anaconda folder>/envs/<env name>
mkdir -p ./etc/conda/activate.d
mkdir -p ./etc/conda/deactivate.d
touch ./etc/conda/activate.d/env_vars.sh
touch ./etc/conda/deactivate.d/env_vars.sh

Edit ./etc/conda/activate.d/env_vars.sh

 #!/bin/sh

 export MY_ANACONDA_TEST='Hello World'

Edit ./etc/conda/deactivate.d/env_vars.sh

#!/bin/sh

unset MY_ANACONDA_TEST

Check it works on activate/deactivate the environment

Anaconda Packages

Search for package versions

conda search --full-name <package name>

Example:

conda search --full-name python

Install package to active env

conda install <package name>

or

conda install <package name> = <package version>

Example:

conda install pip

or

conda install pip=9.0.1

Check pip location: (Mac/Linux): which -a pip (Windows): where pip Check python location: (Mac/Linux): which -a python (Windows): where python Only if you activated env! otherwise it will be install to different directory :

Remote file

pip install <package>

Local file:

pip install relative_path_to_seaborn.tar.gz

Or

pip install .

Or

python setup.py install

Update package to new version

conda update <package name>

or

pip install --upgrade <package name>

Example:

conda update pip

Remove package

conda remove <package name>

Example:

conda remove pip

Revisions

Conda tracks changes in the libraries via revisions

List revisions

conda list --revisions

Install specific revision

conda install --revision 2

Own packages

Create own package

conda metapackage custom-r-bundle 0.1.0 --dependencies r-irkernel jupyter r-ggplot2 r-dplyr --summary "My custom R bundle" 

Upload own package

conda install anaconda-client
anaconda login
anaconda upload path/to/custom-bundle-0.1.0-0.tar.bz2

Use own package

conda install -c <your anaconda.org username> custom-bundle

Remove anaconda

rm -rf <anaconda install directory>

Example:

rm -rf ~/anaconda

On Windows remove from the installed programs. Example

rmdir /s anaconda

Other languages

Like R

conda install -c r r-essentials
conda update -c r r-essentials

Projects

Create requirements.txt

pip install pipreqs
pipreqs /path/to/project

Note Works for pybuilder project

PyCharm

PyBuilder

PyBuilder Urls

• http://pybuilder.github.io/
• Basic Tutorial: http://pybuilder.github.io/documentation/tutorial.html
• List of available plugins: http://pybuilder.github.io/documentation/plugins.html
• Project examples using PyBuilder: http://pybuilder.github.io/documentation/examples.html

Install PyBuilder

pip install pybuilder

Create new project

NOTE!!! for Windows use command pyb_ instead of pyb Installing dependencies and building with default goal

pyb --start-project
pyb install_dependencies publish
pyb

Existing project

pyb install_dependencies
pyb

Describing available tasks

pyb -t

Providing parameters

pyb -P spam="spam message"

IDE integration

PyCharm (Intellij IDEA)

build.py:

use_plugin('python.pycharm')

Command line:

pyb pycharm_generate

PyDev (Eclipse)

build.py:

use_plugin('python.pydev')

Command line:

pyb pydev_generate

Travis CI integration

.travis.yml file

Coveralls integration

pytest pytest-cov libraries