Python import error: Symbol not found, but the symbol is *is not* present in the file

Question

I get this error when I try to import ssrc.spread:

ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packag

Answer 1

$ nm _spread.so | grep _ZN17ssrcspread_v1_0_67Mailbox11ZeroTimeoutE
     U __ZN17ssrcspread_v1_0_67Mailbox11ZeroTimeoutE
     U __ZN17ssrcspread_v1_0_67Mailbox11ZeroTimeoutE

The _spread.so file does not include the symbol, it is depending on it. The U means undefined.

I feel like there may be a version mismatch somewhere, perhaps between the headers and the library binaries. Do you have multiple versions installed?