How to write string (float) to file?

[Paul Rubin]

"Piotr Legiecki" <piotrlg at sci.pam.szczecin.pl> writes:
> How can I tell python to give me only 2 digits after decimal point? And
> of course store it in a variable.
> 
> So I want 'c' to be 3.33.

print '%.2f' % c