How to write string (float) to file?

[Piotr Legiecki]

Hi

I have some simple calculations:
a=30
b=9
c=a/b

and want to store them in a file (as a string):

file.write(`c`)

Well, it is of course wrong, because 'c' is integer and  truncates
everything after period.

c=float(a)/float(b)
works fine, but gives me to much places after decimal point. I need only
ie 2.

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.

Regards
Piotr Legiecki