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On 05/03/2011 06:30 AM, Johnson Tran wrote:
> Hi All,
>
> i am trying to create a program module with two functions (conversion inches
> to centimeters then centimeter to inches, I have my program working although
> I am trying to adda Value Error function to my program but cannot seem to it
> to work:
>
>
> def Conversion():
> print "This program converts the first value from inches to centimeters
> and second value centimeters to inches."
> print "(1 inch = 2.54 centimeters)"
> inches = input("Enter length in inches: ")
> centimeters = 2.54 * inches
> print "That is", centimeters, "centimeters."
>
> centimeters = input("Enter length in centimeters: ")
> inch = centimeters / 2.54
> print "That is", inch, "inches."
>
> except ValueError:
> print "Invalid digit, please try again."
>
> Conversion()
>
>
>
> Any advice would be great, thanks!
>
> JT
Well, you need a 'try' block before that except. Example:
try:
foo = int("blargh")
except ValueError:
pass
It looks like you're forgetting an important operation on the inches
variable, as well as centimeters later on.
Take a look at
http://docs.python.org/library/stdtypes.html#typesnumeric
For future questions, it's best to include what your program /is/ doing
that you think it shouldn't be, as well as any errors (tracebacks, copy
the whole thing!) you get.
- --
Corey Richardson
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