I just resolved a problem installing a Python module pycdio on my Mac OS X 10.10.1 “Yosemite” operating system. The error message was obscure: “Error: Unable to find ‘python.swg’”, and “Error: Unable to find ‘typemaps.i’”. The solution involved something non-obvious about how Mac Ports handles swig. Here’s my notes, in hopes of helping others seeing this error.

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