id,summary,reporter,owner,description,type,status,priority,component,severity,resolution,keywords,cc
7,doubles represented as .nan,anonymous,xi,"in python2.3.5:
yaml.dump(10.24)  will provide .nan

the source of it lay in the python 2.3 .nan handling,
it is equal to any float: 

inf_value = 1e300000
nan = inf_value/inf_value

nan == 5.6 and nan = 5006.78 --> True

after i did change a line in representer.py

from:
elif data == self.nan_value or data != data:

to: 
elif str(data) == str(self.nan_value) or data != data:

yaml.dump -- provide correct handling of floats.

thanks ....
",defect,closed,normal,pyyaml,normal,fixed,,