python Cookbook

Installs and configures Python. Also includes LWRPs for managing python packages with pip and virtualenv isolated Python environments.

Requirements

Platforms

Debian, Ubuntu
CentOS, Red Hat, Fedora

Cookbooks

build-essential
yum

NOTE: The yum cookbook is a dependency of the cookbook, and will be used to install EPEL on RedHet/CentOS 5.x systems to provide the Python 2.6 packages.

Attributes

See attributes/default.rb for default values.

node["python"]["install_method"] - method to install python with, default package.

The file also contains the following attributes:

platform specific locations and settings
source installation settings

Resource/Provider

This cookbook includes LWRPs for managing:

pip packages
virtualenv isolated Python environments

`python_pip`

Install packages using the new hotness in Python package management...pip. Yo dawg...easy_install is so 2009, you better ask your local Pythonista if you don't know! The usage semantics are like that of any normal package provider.

Actions

:install: Install a pip package - if version is provided, install that specific version (default)
:upgrade: Upgrade a pip package - if version is provided, upgrade to that specific version
:remove: Remove a pip package
:user: User to run pip as, for using with virtualenv
:group: Group to run pip as, for using with virtualenv
:purge: Purge a pip package (this usually entails removing configuration files as well as the package itself). With pip packages this behaves the same as :remove

Attribute Parameters

package_name: name attribute. The name of the pip package to install
version: the version of the package to install/upgrade. If no version is given latest is assumed.
virtualenv: virtualenv environment to install pip package into
options: Add additional options to the underlying pip package command
timeout: timeout in seconds for the command to execute. Useful for pip packages that may take a long time to install. Default 900 seconds.

Examples

# install latest gunicorn into system path
python_pip "gunicorn"

# target a virtualenv
python_pip "gunicorn" do
  virtualenv "/home/ubunut/my_ve"
end

# install Django 1.1.4
python_pip "django" do
  version "1.1.4"
end

# use this provider with the core package resource
package "django" do
  provider Chef::Provider::PythonPip
end

`python_virtualenv`

virtualenv is a great tool that creates isolated python environments. Think of it as RVM without all those hipsters and tight jeans.

Actions

:create: creates a new virtualenv
:delete: deletes an existing virtualenv

Attribute Parameters

path: name attribute. The path where the virtualenv will be created
interpreter: The Python interpreter to use. default is null (i.e. use whatever python the virtualenv command is using).
owner: The owner for the virtualenv
group: The group owner of the file (string or id)
options : Command line options (string)

Examples

# create a 2.6 virtualenv owned by ubuntu user
python_virtualenv "/home/ubuntu/my_cool_ve" do
  owner "ubuntu"
  group "ubuntu"
  action :create
end

# create a Python 2.4 virtualenv
python_virtualenv "/home/ubuntu/my_old_ve" do
  interpreter "python2.4"
  owner "ubuntu"
  group "ubuntu"
  action :create
end

# create a Python 2.6 virtualenv with access to the global packages owned by ubuntu user
python_virtualenv "/home/ubuntu/my_old_ve" do
  owner "ubuntu"
  group "ubuntu"
  options "--system-site-packages"
  action :create
end

Usage

default

Include default recipe in a run list, to get python, pip and virtualenv. Installs python by package or source depending on the platform.

package

Installs Python from packages.

source

Installs Python from source.

pip

Installs pip from source.

virtualenv

Installs virtualenv using the python_pip resource.

License & Authors

Author:: Seth Chisamore (schisamo@opscode.com)

Copyright:: 2011, Opscode, Inc

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

License

ProReactJS/python

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