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Kenneth Reitz
82 lines
2.2 KiB
ReStructuredText
82 lines
2.2 KiB
ReStructuredText
Properly Installing Python
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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 "$(curl -fsS http://gist.github.com/raw/323731/install_homebrew.rb)"
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It's basic commands are **update**, **install**, and **remove**.
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.. man brew
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Python Interpreter
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::::::::::::::::::
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And we can now install Python 2.7: ::
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$ sudo 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 The outdated version of Python that Snow Leopard comes packaged with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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$ echo 'EXPORT PATH=/usr/local/Cellar/python2.7/bin:$PATH' >> .profile
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Distribute & Pip
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::::::::::::::::
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*Distribute* is a fantastic drop-in replacement for *easy_install* and
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*setuptools*. It allows you to install and manage python packages from
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pypi.python.org, amongst a few other sources. It also plays well with
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*virtualenv* and user-enviornments.
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**easy_install** is considered by many to be a deprecated system, so we
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will install it's replacement: **pip**. Pip allows for uninstallation
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of packages, and is actively maintained, unlike setuptool's easy_install.
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To install *pip* and Distribute's *easy_install*:
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If you have homebrew: ::
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$ 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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