[Biopython] Looking for Python DNA melting temp calculator

[Nathan McCorkle]

I downloaded the zip file here:
http://osdir.com/ml/python.bio.general/2003-11/msg00043.html

but it says c on line 20 is undefined when I call the function:
LogDNA = r * math.log(c/4e9)

Anyone know of a working version to get a forward and reverse primer
list from a DNA sequence?

-- 
Nathan McCorkle
Rochester Institute of Technology
College of Science, Biotechnology/Bioinformatics