Need help with my 1st python program

Vincent Davis vincent at vincentdavis.net
Sat May 8 15:49:49 EDT 2010


I think what is not clear by what is being said is that you have passed in
pressure and not 'pressure'. The first is undefined, pressure = 1 would
define it. Where as 'pressure' is a string type.

On Sat, May 8, 2010 at 1:35 PM, Walter Brameld IV <
wb4REMOVE_THIS_TEXT at wbrameld4.name> wrote:

> Dave Luzius wrote:
>
>> On Sat, 08 May 2010 19:02:42 +0000, Steven D'Aprano wrote:
>>
>>  On Sat, 08 May 2010 18:52:33 +0000, Dave Luzius wrote:
>>>
>>>  Pleaser help me with this. Here's a copy of the program, but it keeps
>>>> calling for me to define pressure.
>>>>
>>> That's because you haven't defined pressure.
>>>
>>> When Python tells you there is a bug in your program, it is almost
>>> always correct.
>>>
>>>
>>>  # A small program to fetch local barometer reading   from weather.com #
>>>> and convert the value from   metric to imperial. # My first attempt at
>>>> Python.
>>>> #--------------------------------------------------------------------
>>>> import urllib
>>>>
>>>> # next line does the fetching
>>>> urllib.urlopen("http://xoap.weather.com/weather/local/USMI0060",
>>>> pressure)
>>>>
>>> What is pressure? It is an undefined name. Where does pressure get its
>>> value from?
>>>
>>
>> Pressure is a term for barometric pressure, and is understood by Conky,
>> which this program is designed to work with, and is understood by
>> weather.com. But the value it passes to conky is metric, and I want it to
>> display in imperial.
>>
>> What should I do....
>>
>
> You're passing in the value of pressure as the 'data' parameter to
> urllib.urlopen.  So...what is the value of pressure?  You haven't assigned
> any value to it before calling urlopen.  Therein lies the problem.
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>

  *Vincent Davis
720-301-3003 *
vincent at vincentdavis.net
 my blog <http://vincentdavis.net> |
LinkedIn<http://www.linkedin.com/in/vincentdavis>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20100508/401e1180/attachment.html>


More information about the Python-list mailing list