Re: Teething troubles with Python on a Mac

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  • Sean DiZazzo

    Re: Teething troubles with Python on a Mac

    Question 1: How can I locate the Python installation? There a few
    files under Applications MacPython 2.5, but this is clearly not the
    entire installation.
    find / -name "site-packages"

    Will lead you to where SciPy and Numpy should be installed for each
    Python installation. You can work backwards from there.
    >
    Question 2: In Finder, If I click on Search For Past week, I can see
    a sequence of folders under the horizontal scroll bar at the bottom of
    the window, allowing me to determine that some files that were placed
    under Applications MacPython 2.5ExtraDemo. But I do not seem to
    be able to see the sequence of folders under the horizontal scroll bar
    in any finder window. What do I need to do to make the folder sequence
    visible in all Finder Windows?
    You can do what you want in Leopard, but not in Tiger. I Don't have a
    Leopard install in front of me. Check Finder->Preferences, or Finder-
    >View->Show View Options
    Question 4. How do I get MacPython 2.5.2 to see SciPy, NumPy etc.
    I've had very good luck with "easy_insta ll" It downloads and installs
    the right package for your install.


    Question 5. How can I find the current value of the PYTHONPATH
    environment variable, and how can I edit it and add a directory in
    which I keep my Python programs.
    I'm not even sure it's set. I have never had to worry about it.
    Question 6. Apparently there's a Property List Editor that must be
    used to create a file called ~ /.MacOSX/environment.pli st. I can't
    find a directory called ~/.MacOSX. Is this a hidden directory?
    It doesn't exist by default, you have to create it. I don't have the
    format of the environment.pli st in front of me, but if I remember
    correctly, you can create it with any text editor. Or you can
    download a freeware program to do the whole shebang for you:

    Item 4. I opened a terminal window, and typed ipython. Here's what I
    got:
    >
    The ipython/IPython directory should be in a directory belonging to
    your
    PYTHONPATH environment variable (that is, it should be in a directory
    belonging to sys.path). You can copy it explicitly there or just link
    to it.
    >
    Question 7. What is this cryptic message all about? I'm completely
    confused.
    Try copying the ipython directory into the corresponding "site-
    packages" directory from earlier. Otherwise, scrap it and use
    easy_install.

    Good luck!

    ~Sean

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