[Tutor] parsing response from SOAPpy request
I'm using SOAPpy to access weather data from the NOAA National Digital Forecast Database XML Web Service [1] and I've been having trouble figuring out how to parse the data. The response comes back as XML document but when I check it with type(result) it shows the the response is a string. Does anyone have any suggestions on getting relevant data? I've attached a sample SOAP response to this post. Thanks, -Sean http://www.w3.org/2001/XMLSchema"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:noNamespaceSchemaLocation="http://www.nws.noaa.gov/forecasts/xml/DWMLgen/schema/DWML.xsd";> NOAAs National Weather Service Forecast by 12 Hour period meteorological forecast 2007-08-31T21:35:20Z http://www.nws.noaa.gov/forecasts/xml/ Meteorological Development Laboratory Product Generation Branch http://www.nws.noaa.gov/disclaimer.html http://www.weather.gov/ http://www.weather.gov/images/xml_logo.gif http://www.weather.gov/survey/nws-survey.php?code=xmlsoap point1 k-p24h-n7-1 2007-08-31T06:00:00-04:00 2007-08-31T18:00:00-04:00 2007-09-01T06:00:00-04:00 2007-09-01T18:00:00-04:00 2007-09-02T06:00:00-04:00 2007-09-02T18:00:00-04:00 2007-09-03T06:00:00-04:00 2007-09-03T18:00:00-04:00 2007-09-04T06:00:00-04:00 2007-09-04T18:00:00-04:00 2007-09-05T06:00:00-04:00 2007-09-05T18:00:00-04:00 2007-09-06T06:00:00-04:00 2007-09-06T18:00:00-04:00 k-p24h-n7-2 2007-08-31T18:00:00-04:00 2007-09-01T06:00:00-04:00 2007-09-01T18:00:00-04:00 2007-09-02T06:00:00-04:00 2007-09-02T18:00:00-04:00 2007-09-03T06:00:00-04:00 2007-09-03T18:00:00-04:00 2007-09-04T06:00:00-04:00 2007-09-04T18:00:00-04:00 2007-09-05T06:00:00-04:00 2007-09-05T18:00:00-04:00 2007-09-06T06:00:00-04:00 2007-09-06T18:00:00-04:00 2007-09-07T06:00:00-04:00 k-p12h-n14-3 2007-08-31T06:00:00-04:00 2007-08-31T18:00:00-04:00 2007-08-31T18:00:00-04:00 2007-09-01T06:00:00-04:00 2007-09-01T06:00:00-04:00 2007-09-01T18:00:00-04:00 2007-09-01T18:00:00-04:00 2007-09-02T06:00:00-04:00 2007-09-02T06:00:00-04:00 2007-09-02T18:00:00-04:00 2007-09-02T18:00:00-04:00 2007-09-03T06:00:00-04:00 2007-09-03T06:00:00-04:00 2007-09-03T18:00:00-04:00 2007-09-03T18:00:00-04:00 2007-09-04T06:00:00-04:00 2007-09-04T06:00:00-04:00 2007-09-04T18:00:00-04:00 2007-09-04T18:00:00-04:00 2007-09-05T06:00:00-04:00 2007-09-05T06:00:00-04:00 2007-09-05T18:00:00-04:00 2007-09-05T18:00:00-04:00 2007-09-06T06:00:00-04:00 2007-09-06T06:00:00-04:00 2007-09-06T18:00:00-04:00 2007-09-06T18:00:00-04:00 2007-09-07T06:00:00-04:00 Daily Maximum Temperature 85 80 83 85 86 84 84 Daily Minimum Temperature 59 57 62 67 66 66 12 Hourly Probability of Precipitation 18 14 0 0 0 0 7 9 10 14 14 20 20 Weather Type, Coverage, and Intensity Conditions Icons http://www.nws.noaa.gov/weather/images/fcicons/nfew.jpg http://www.nws.noaa.gov/weather/images/fcicons/few.jpg
[Tutor] Best way to construct this
Hi,
I'm trying to create a desktop weather program using the weather.gov SOAP
XML feed[1] and (after I get the insides all sorted out) Tkinter. However,
this is my first major program and I was wondering if anyone could offer me
some guidance in the construction of it.
I have settled on using SOAPpy for the SOAP interface and pyXML to parse the
resulting XML, but I am having trouble figuring out what the most efficient
way of parsing the XML and arranging my program.
Right now I have two modules named libndfdsoap and weatherpy. Module
libndfdsoap contains one function that gets the XML and saves it to a file
named weather.xml. Module weatherpy contains some constants and a class for
parsing the XML with different functions for find different data types.
I am using xml.dom.minidom and using childNodes to narrow down to the values
that I need and then storing that in a dictionary. Here's a snippet of
the code:
class ByDayXMLParse:
"""Contains functions for parsing the NDFD XML"""
def __init__(self, path_to_xml_file):
global data, maxtempdata, maxtempnode
data = minidom.parse(path_to_xml_file)
#Dictionary in which the max temps are going to be stored in the format
#{1: day1temp, 2: day2temp, ...}
maxtempdata = {}
#Less typing for me :)
maxtempnode = data.childNodes[0].childNodes[3].childNodes[9
].childNodes[1]
def maxTemp(self, path_to_xml_file):
x = 3
y = 1
while x < 16:
maxtempdata[y] = maxtempnode.childNodes[x].childNodes[0].data
x, y = x + 2, y + 1
I've tried putting the XML parsing code in libndfdsoap but by doing so I
couldn't access the resulting data. I can't help but feel like I'm missing
something that will make my life a whole lot easier.
Any help would be greatly appreciated.
-Sean
[1] http://www.weather.gov/forecasts/xml/
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Re: [Tutor] Best way to construct this
Hey, Thanks Alan for the help on the classes. This is my first time using them (in case you couldn't tell :) ). However, I can't understand why you want to make a separate function called parse. What I am trying to do by having different functions in the class like maxtemp, and mintemp, is to allow my self to be able to parse only for certain data, instead of having one giant function that parses for everything. That way I have the option of being able to selectively parse the data. It also gives me the option as you said of being able to reparse the data later if it became corrupted somehow. Also, where should I put the value for the maxtempnode since you set them equal to none in the pseudo code you sent. >class Weather: >def init(self, fname): >self.filename = fname >self.data = None >self.maxtemp = None >self.maxnode = None Should I change the None to what their values should be, or should I do that at some point later in the code? Thanks, -Sean ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
