Hello,
I am a newbie on oython and I am taking the error at subject my code is
below, I am trying to develop a qgis plugin and lines begin with # is the
thing that I tried. Thus sys.stdout gives the type error. When I comment
that line it turns an error like below. What may be the problem? thanks for
help:)
...\ReadData.py", line 128, in run
print "%d %s" %(k, attr.toString())
IOError: [Errno 9] Bad file descriptor
# Import the PyQt and QGIS libraries
from PyQt4 import QtCore, QtGui
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from qgis.core import *
from os import *
from qgis.gui import *
import sys
import pdb
# Initialize Qt resources from file resources.py
import resources
# Import the code for the dialog
from ReadDataDialog import ReadDataDialog
class ReadData:
def __init__(self, iface):
# Save reference to the QGIS interface
self.iface = iface
def initGui(self):
# Create action that will start plugin configuration
self.action = QAction(QIcon(":/plugins/readdata/icon.png"), \
"Read shp for calculations", self.iface.mainWindow())
# connect the action to the run method
QObject.connect(self.action, SIGNAL("triggered()"), self.run)
# Add toolbar button and menu item
self.iface.addToolBarIcon(self.action)
self.iface.addPluginToMenu("&Read shp for calculations", self.action)
def unload(self):
# Remove the plugin menu item and icon
self.iface.removePluginMenu("&Read shp for calculations",self.action)
self.iface.removeToolBarIcon(self.action)
# run method that performs all the real work
def run(self):
# fileName =
QFileDialog.getOpenFileName(None,QString.fromLocal8Bit("Select a file:"),"",
"*.shp *.gml")
# if fileName.isNull():
# QMessageBox.information(None, "Cancel", "File selection canceled")
# else:
# print fileName
vlayer =
QgsVectorLayer("C:\\Users\\lutfi\\Documents\\tezzzz\\deneme2\\ownership.shp",
"hebe", "ogr")
print vlayer.source()
print vlayer.featureCount()
QgsMapLayerRegistry.instance().addMapLayer(vlayer)
QMessageBox.information(self.iface.mainWindow(), "info", "file:
"+str(vlayer.source())+" is added.")
if not vlayer.isValid():
print "Couldn't open the layer"
pdb.set_trace()
else:
# QMessageBox.information(None, "Cancel", "File selection canceled")
provider = vlayer.dataProvider()
feat = QgsFeature()
allAttrs = provider.attributeIndexes()
provider.select(allAttrs)
while provider.nextFeature(feat):
geom = feat.geometry()
import sys
import os
#
win32api.SetFileAttributes('C://Users//lutfi//Documents//tezzzz//log.txt',
win32con.FILE_ATTRIBUTE_NORMAL)
# sys.stdout = open('C://Users//lutfi//Documents//tezzzz//log.txt',
777 )
print geom
# QMessageBox.information(None, "Cancel", "File selection canceled")
print "Feature ID %d: " % feat.id()
if geom.type() == QGis.Point:
x = geom.asPoint()
print "Point: " + str(x)
elif geom.type() == QGis.Line:
x = geom.asPolyline()
print "Line: %d points" % len(x)
elif geom.type() == QGis.Polygon:
x = geom.asPolygon()
numPts = 0
for ring in x:
numPts += len(ring)
print "Polygon: %d rings with %d points" % (len(x), numPts)
else:
print "Unknown"
attrs = feat.attributeMap()
for (k,attr) in attrs.iteritems():
sys.stdout =
os.open("C://Users//lutfi//Documents//tezzzz//log.txt" , "a" )
print "%d %s" %(k, attr.toString())
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