[Tutor] File IO

[Liam Clarke-Hutchinson]

Woah, that's way simpler than mine.

Liam Clarke-Hutchinson


-----Original Message-----
From: tutor-bounces at python.org [mailto:tutor-bounces at python.org] On Behalf
Of bob
Sent: Friday, 4 November 2005 11:01 a.m.
To: m.haft at abdn.ac.uk; tutor at python.org
Subject: Re: [Tutor] File IO


At 01:34 PM 11/3/2005, Michael Haft wrote:
>Hello,
>      I tried the following code:
>
>def readSOMNETM(inputName):
>     input = open(inputName, "r")
>     result = []
>     for line in input:
>         fields = line.split()

           # add this; it will show you what line(s) have less than 8 fields
           if len(fields) < 8:
               print "Line too short", line
               continue

>         data = fields[1] + fields[2] + fields[7]
>         result.append(data)
>     input.close()
>     return result
>
>
>print "Here goes"
>print "Enter filename:"
>filename = raw_input("Name:")
>print readSOMNETM(filename)
>print "might work"
>
>on  a file that lookes like this:
>
>Monthly Weather Data, LAU73M.MET, converted from:
>BAD LAUCHSTAEDT; DAILY METEOROLOGICAL DATA FOR 01/01/1973-31/12/1973 
>VAP, DEWP CALCULATED FROM MEASURED AVTEMP AND HUMID DATA
>MONTH   RAIN    AVTEMP  S10     RAD     SUN     WIND    EVAPW
>**************************************************************
>1       22.5    0.3     *       54.6    15.1    *       11.9
>2       16.1    1.8     *       110     51.1    *       18.1
>3       16.4    4.8     *       227.5   94.5    *       36.8
>4       19.5    5.9     *       286.3   89      *       45.5
>5       36.1    13.2    *       448.5   164.6   *       83
>6       36      16.9    *       525.7   208.8   *       105.7
>7       37.7    18.2    *       459.7   165.4   *       98.6
>8       29.3    18.2    *       463.8   206.8   *       97.9
>9       27      14.8    *       277.5   119.5   *       58.7
>10      57.6    7.6     *       158.7   72.2    *       31.3
>11      23.4    3.9     *       98.3    75.6    *       19.1
>12      14      0.7     *       55.5    38      *       12.5
>
>
>And recieved the following error:
>
>Traceback (most recent call last):
>   File "C:\Python24\INProgress.py", line 15, in -toplevel-
>     print readSOMNETM(filename)
>   File "C:\Python24\INProgress.py", line 6, in readSOMNETM
>     data = fields[1] + fields[2] + fields[7]
>IndexError: list index out of range
>
>Essentially I'm trying to write a bit of code that can take any of the 
>fields in the above data i.e. rain temp evap for each month for a 
>hundred or so files like this one and spit out a file at the end that 
>has the data in a different format.
>
>Any help would be very much appreciated I need to get this done by the 
>end of next week

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