Can i reasonably link in C code to an application managed with quickly?

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http://askubuntu.com – I'm looking around for a way to program some gui apps in ubuntu 12.04. I ran across the quickly tutorial http://developer.ubuntu.com/get-started/ and the tool looks fantastic. It looks like the primary language you develop with is python, which is fine with me. But i know that i will need to link in c (or other compiled) code for intensive number crunching and to take advantage of the huge number of binary libraries out there. I understand that python is designed so that you can link c code into it (although i don't know anything about the details, such as whether it can be done dynamicall (HowTos)