Command line cheatsheet for Developers

Pip

Install a library

pip install <lib-name>

Install a wheel

pip install -m <wheel_name>

• To install a package from PyPI for only yourself:

1	$ pip install --user foobar

This installs the package files to ~/.local/lib/python2.x/site-packages.

• To uninstall a package that was installed for all users:

1	$ sudo pip uninstall foobar

• To uninstall a package that was installed only for you:

1	$ pip uninstall --user foobar

• To upgrade an installed package:

1	$ pip install --upgrade foobar

• To list all installed packages and their versions:

1	$ pip list

• To search PyPI for a package by name:

1	$ pip search foobar

• To list the installed file paths of a package:

1	$ pip show -f foobar

To keep your file structure with commands and nicely separate your dependencies from your dependencies’ dependencies:

pip freeze -r requirements-to-freeze.txt > requirements.txt

instead of just:

pip freeze > requirements.txt

Sometimes we are asked to install microsoft build tools for installing certain libraries but I don't want since it takes a lot of space and don't require it so in that case we can use pre-built binary package of those lib.

https://www.lfd.uci.edu/~gohlke/pythonlibs/

Composer

composer

shows list of available commands

composer list

shows a list of commands available

composer init

create composer.json file

• --name: Name of the package.
• --description: Description of the package.
• --author: Author name of the package.
• --type: Type of package.
• --homepage: Homepage of the package.
• --require: Package to require with a version constraint. Should be in format foo/bar:1.0.0.
• --require-dev: Development requirements, see --require.
• --stability (-s): Value for the minimum-stability field.
• --license (-l): License of package.
• --repository: Provide one (or more) custom repositories. They will be stored in the generated composer.json, and used for auto-completion when prompting for the list of requires. Every repository can be either an HTTP URL pointing to a composer repository or a JSON string which similar to what the repositories key accepts.

composer require package-name

The require command adds new packages to the composer.json file from the current directory. If no file exists one will be created on the fly.

composer require

After adding/changing the requirements, the modified requirements will be installed or updated.

If you do not want to choose requirements interactively, you can pass them to the command.

composer require vendor/package:2.* vendor/package2:dev-master

If you do not specify a package, composer will prompt you to search for a package, and given results, provide a list of matches to require.

composer install

Installs all the package in composer.json

composer update

Updates the installed packages

composer remove

Remove the specified package