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    <p><strong>1: Installing third party packages to hosted spaces</strong> </p> <p>You can indeed install third party packages to your hosted space. If it's a pure python package, all that's needed is to unpack it to a directory and then add that directory to your PYTHONPATH environment variable or <code>sys.path</code>.</p> <p>This can be tiring to do often, and won't work easily for compiled modules. If you have shell access to your python host, the excellent <a href="http://pypi.python.org/pypi/virtualenv" rel="noreferrer">virtualenv</a> package allows you to do set up a private python environment with its own libraries.</p> <p>To set up your virtualenv, you'll do something like this at the shell:</p> <pre><code>$ virtualenv $HOME/my_python $ $HOME/my_python/bin/easy_install numpy </code></pre> <p>You can keep running easy_install for anything else you want to install in your personal python environment.</p> <p>Now, when you write your python scripts, you will want to use your private python interpreter, if that is possible:</p> <pre><code>#!/home/myuser/my_python/bin/python import numpy # script here </code></pre> <p>If your python env cannot be specified (such as if run by mod_wsgi), you will need to add it to the import path:</p> <pre><code>import sys sys.path.insert(0, '/home/myuser/my_python/lib/python2.5/site-packages') import numpy </code></pre> <p><strong>2: Hosting sites with numpy</strong></p> <p>I can't think of any hosting sites offhand which offer numpy pre-installed. However, <a href="http://www.dreamhost.com/" rel="noreferrer">Dreamhost</a>/Bluehost for sharedhosts provide SSH access, and with shell access you can install numpy using the methods I described above. Any Virtual Private Server such as <a href="http://www.linode.com/" rel="noreferrer">Linode</a>/<a href="http://www.slicehost.com/" rel="noreferrer">Slicehost</a> will allow you to install whatever you desire, as well.</p> <p><strong>3: AppEngine</strong></p> <p>As mentioned above, AppEngine will not allow you to install C extensions (but pure python ones do work) so it's unlikely numpy will work for you on there, since I suspect some of its features use C speedups.</p>
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    1. POPython web hosting: Numpy, Matplotlib, Scientific Computing
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    1. COThank you for the useful advice. I will try this out as far as my account allows.
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      1. USSteve Tjoa
    2. CODon't use sys.path.insert(), use site.addsitedir() instead. The latter properly interprets .pth files in site-packages directory. There are also reordering issues you need to deal with as well. Read 'http://code.google.com/p/modwsgi/wiki/VirtualEnvironments'.
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      1. USGraham Dumpleton
    3. COnumpy and matplotlib are not supported on app engine w/ python 2.7
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      1. USDima Tisnek
 

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