[Python-Dev] co_firstlineno on decorated functions (original) (raw)

Raghuram Devarakonda draghuram at gmail.com
Tue Aug 3 17:05:08 CEST 2010

On Tue, Aug 3, 2010 at 10:14 AM, Guido van Rossum <guido at python.org> wrote:

What are the use cases for cofirstlineno? Even if it is for displaying the source code, I can find virtue for both sides of this argument.

nose uses co_firstlineno to determine order of the test functions and decorating a test function can change such order. To keep the ordering, it provides nose.tools.make_decorator() which explicitly keeps the line number of the original function. Check the following thread for a discussion in this regard:

http://groups.google.com/group/nose-users/browse_thread/thread/3e354cbb5b1fac6/107429c5abbf2e59

Thanks, Raghu

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