[Tutor] EXECUTING PYTHON AND SQL STAMENTS

[Susana Iraiis Delgado Rodriguez]

I'm developing a module to execute an external command. The module executes
the command, but in order to make my code useful I have to enter some sql
staments. This is my code:
from dbf import *
from osgeo import ogr
import os
import sys
def call():
      print "Ingresa el nombre para el nuevo mapa"
      arg1 = "R1G-GEODESIA2.shp"
      print arg1
      print "Ingresa la condicion"
      arg2 = "LAYER = 'R1G-GEODESIA'"
      print arg2
      print "Ingresa el nombre del mapa original"
      arg3 = 'C:/Python26/tapalpa_05_plani_point.shp'
      print arg3
      os.system('"C:/Archivos de programa/FWTools2.4.7/setfw"')
      os.system('"C:/Archivos de programa/FWTools2.4.7/bin/ogr2ogr.exe"'+" "
+"arg1" +" "+ "-where" +" "+ "arg2" +" " +"arg3")
call()
The problem is that when I run the module it throws the error:
Unable to open datasource`arg3' with the following drivers.
ESRI Shapefile
MapInfo File
UK .NTFSDTS
TIGER
S57
DGN
VRT
REC
Memory
BNA
CSV
NAS
GML
GPX
KML
GeoJSON
Interlis 1
Interlis 2
GMT
SQLite
ODBC
PGeo
OGDI
PostgreSQL
MySQL
XPlane
AVCBin
AVCE00
DXF
Geoconcept
GeoRSS
GPSTrackMaker
VFK
Can you help me please?
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