[EMAIL PROTECTED] wrote:
> Hi I'm very much a beginner with Python.
> I want to write a function to convert celcius to fahrenheit like this
> one:
>
> def celciusToFahrenheit(tc):
> tf = (9/5)*tc+32
> return tf
>
> I want the answer correct to one decimal place, so
> celciusToFahrenheit(12) would return 53.6.
>
> Of course the function above returns 53.600000000000001.
>
> How do I format it correctly?
print celcisuToFahrenheit (12)
will do fine.
Python 2.5.1 (r251:54863, Oct 5 2007, 13:36:32)
[GCC 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> def celciusToFahrenheit(tc):
... tf = (float(9)/5)*tc+32
... return tf
...
>>> celciusToFahrenheit (12)
53.600000000000001
>>> print celciusToFahrenheit (12)
53.6
The straight value display from the interpreter pursues precision to
the bitter end, doing its formatting with the repr function. print
uses str formatting for a more expected result.
Mel.
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