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Search found 3 results on 1 pages for 'benjamingolder'.

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• Getting PATH right for python after MacPorts install

  - by BenjaminGolder

  I can't import some python libraries (PIL, psycopg2) that I just installed with MacPorts. I looked through these forums, and tried to adjust my PATH variable in $HOME/.bash_profile in order to fix this but it did not work. I added the location of PIL and psycopg2 to PATH. I know that Terminal is a version of python in /usr/local/bin, rather than the one installed by MacPorts at /opt/local/bin. Do I need to use the MacPorts version of Python in order to ensure that PIL and psycopg2 are on sys.path when I use python in Terminal? Should I switch to the MacPorts version of Python, or will that cause more problems? In case it is helpful, here are more facts: PIl and psycopg2 are installed in /opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages which pythonreturns/usr/bin/python echo $PATHreturns (I separated each path for easy reading): :/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/ :/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages :/opt/local/bin :/opt/local/sbin :/usr/local/git/bin :/usr/bin :/bin :/usr/sbin :/sbin :/usr/local/bin :/usr/local/git/bin :/usr/X11/bin :/opt/local/bin in python, sys.path returns: /Library/Frameworks/SQLite3.framework/Versions/3/Python /Library/Python/2.6/site-packages/numpy-override /Library/Frameworks/GDAL.framework/Versions/1.7/Python/site-packages /Library/Frameworks/cairo.framework/Versions/1/Python /System/Library/Frameworks/Python.framework/Versions/2.6/lib/python26.zip /System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6 /System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/plat-darwin /System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/plat-mac /System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/plat-mac/lib-scriptpackages /System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python /System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/lib-tk /System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/lib-old /System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/lib-dynload /Library/Python/2.6/site-packages /System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/PyObjC /System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python/wx-2.8-mac-unicode I welcome any criticism and comments, if any of the above looks foolish or poorly conceived. I'm new to all of this. Thanks! Running OSX 10.6.5 on a MacBook Pro, invoking python 2.6.1 from Terminal

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• good methods for boolean operations on overlapping polygons

  - by BenjaminGolder

  What is the best open source library for performing boolean operations (union, intersect, subtract) on shapefiles? What do you like to use? OGR looks like it probably has this capability, though I'm having trouble finding the particular commands in their documentation. Shapely definitely does this, and is easy to understand. PostGIS appears to also have some commands for this. But there must be more, and I'm having trouble finding them. I don't have much experience with any of the, and would appreciate any opinions on these or other libraries. Thanks!

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• python NameError: name '<anything>' is not defined (but it is!)

  - by BenjaminGolder

  Note: Solved. It turned out that I was importing a previous version of the same module. It is easy to find similar topics on StackOverflow, where someone ran into a NameError. But most of the questions deal with specific modules and the solution is often to update the module. In my case, I am trying to import a function from a module that I wrote myself. The module is named InfraPy, and it is definitely on sys.path. One particular function (called listToText) in InfraPy returns a NameError, but only when I try to import it into another script. Inside InfraPy, under if __name__=='__main__':, the listToText function works just fine. From InfraPy I can import other functions with no problems. Including from InfraPy import * in my script does not return any errors until I try to use the listToText function. How can this occur? How can importing one particular function return a NameError, while importing all the other functions in the same module works fine? Using python 2.6 on MacOSX 10.6, also encountered the same error running the script on Windows 7, using IronPython 2.6 for .NET 4.0 Thanks. If there are other details you think would be helpful in solving this, I'd be happy to provide them. As requested, here is the function definition inside of InfraPy: def listToText(inputList, folder=None, outputName='list.txt'): ''' Creates a text file from a list (with each list item on a separate line). May be placed in any given folder, but will otherwise be created in the working directory of the python interpreter. ''' fname = outputName if folder != None: fname = folder+'/'+fname f = open(fname, 'w') for file in inputList: f.write(file+'\n') f.close() This function is defined above and outside of if __name__=='__main__': I've tried moving InfraPy around in relation to the script. The most baffling situation is that when InfraPy is in the same folder as the script, and I import using from InfraPy import listToText, I receive this error: NameError: name listToText is not defined. Again, the other functions import fine, they are all defined outside of if __name__=='__main__': in InfraPy.

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