NathanW2

from qgis.utils import iface
from PyQt4.QtCore import * 
from PyQt4.QtGui import * 

def snapping_toggle():
    #layer = QgsMapLayerRegistry.instance().mapLayersByName("topographicline")[0]
    layer = iface.activeLayer()
    _, enabled, _, _, _, _ = QgsProject.instance().snapSettingsForLayer(layer.id())
    QgsProject.instance().setSnapSettingsForLayer(layer.id(), not enabled, 0, 1, 10, True)
    print "set {} snapping {}".format(layer.name(), "Off" if not enabled else "On")

NathanW2

from qgis.utils import iface
from qgis.core import QGis
from qgiscommand.command import command

@command()
def bbox():
    layer = iface.activeLayer()

    def pbounds (Lextent,s):
        e = Lextent

NathanW2

import os
import sys
import sip

from qgis.core import (
    QgsApplication, QgsVectorLayer, QgsField,
    QgsFields, QgsFeature, QgsGeometry, QgsPoint, QgsMapLayerRegistry)

from PyQt4.QtCore import QVariant

NathanW2

computeFieldIndex = layer.fieldNameIndex('population')
allFieldsMap = layer.pendingFields()
expression = QgsExpression('"affected" = 1')
expression.prepare(allFieldsMap)

if expression.hasParserError():
  raise Exception('Parser error !!')

def getFeatures():
  if self.selectedOnly: