mirror of
https://github.com/kennethreitz/python-guide.git
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Adam Brenecki
142 lines
3.7 KiB
ReStructuredText
142 lines
3.7 KiB
ReStructuredText
Properly Installing Python
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==========================
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Mac OS X
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*Or, "Installing Python 2.7 via Homebrew".*
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One of the reasons everybody loves Python is the interactive shell. It
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basically allows you to execute Python commands in real time and
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immediately get results back. Flask itself does not come with an
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interactive shell, because it does not require any specific setup upfront,
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just import your application and start playing around.
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Package Manager
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---------------
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While Snow Leopard comes with a large number of UNIX utilities, those
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familiar with Linux systems will notice one key component missing: a
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package manager. Mxcl's *Homebrew* is the answer.
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To install Homebrew, simply run: ::
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$ ruby -e "$(curl -fsS http://gist.github.com/raw/323731/install_homebrew.rb)"
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It's basic commands are **update**, **install**, and **remove**.
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.. man brew
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And we can now install Python 2.7: ::
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$ brew install python --framework
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The ``--framework`` option tells Homebrew to compile a Framework-style Python build, rather than a UNIX-style build. The outdated version of Python that Snow Leopard comes packaged with
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is built as a Framework, so this helps avoid some future module installation
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bugs.
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*Don't forget to update your environment PATH.*
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Building From Source
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--------------------
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Distribute & Pip
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----------------
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*Distribute* is a fantastic drop-in replacement for *easy_install* and
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*setuptools*. It allows you to install and manage python packages from
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pypi.python.org, amongst a few other sources. It also plays well with
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*virtualenv* and user-enviornments.
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**easy_install** is considered by many to be a deprecated system, so we
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will install it's replacement: **pip**. Pip allows for uninstallation
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of packages, and is actively maintained, unlike setuptool's easy_install.
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To install *pip* and Distribute's *easy_install*:
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If you have homebrew: ::
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$ brew install pip
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...And, if you're a masochist: ::
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$ curl -O http://python-distribute.org/distribute_setup.py
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$ python distribute_setup.py
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$ easy_install pip
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To install ``pip``: ::
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Hopefully you'll never have to use **easy_install** again.
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Updating Python
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---------------
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Homebrew makes it simple. ::
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$ brew update
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$ brew install --force python
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Windows
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:::::::
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Prerequisites:
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--------------
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* Python2.7 (x86) from Python.org
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* Microsoft Visual Studio
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Step 1: Install Distribute & Pip
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--------------------------------
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**Distribute** is a fantastic drop-in replacement for **easy_install** and **setuptools**. It allows you to install and manage python packages from PyPi, amongst a few other sources.
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To install it, run the python script available here:
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<http://python-distribute.org/distribute_setup.py>
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Make sure that ```C:\Python27\```, and ```C:\Python27\Scripts``` are in your PATH.
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**easy_install** is considered by many to be a deprecated system, so we will install it's replacement: **pip**. Pip allows for uninstallation of packages, and is actively maintained, unlike setuptool's easy_install.
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To install pip, simply run: ::
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$ easy_install pip
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Linux (Ubuntu)
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::::::::::::::
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Natty Narwhal, the latest version of Ubuntu, comes with Python 2.7 out of the box. Python 3.0 can be installed and run with the following commands::
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sudo apt-get install python3-minimal
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python3
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Older versions of Python aren't available from the official repository. However, if it's needed (for example to support legacy code), we can add an unsupported repository and install an older version of Python (2.5 in the example below)::
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$ sudo add-apt-repository ppa:fkrull/deadsnakes
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$ sudo apt-get update
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$ sudo apt-get install python2.5
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Linux (Manual)
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::::::::::::::
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