# make custom button to search Parcels by Parcel Number
# and zoom to selected parcel
mxd = arcpy.mapping.MapDocument("CURRENT")
df = arcpy.mapping.ListDataFrames(mxd, "Layers") [0]
input_PIN = raw_input('Enter your value :')
sql_exp = """"PIN" = '""" + input_PIN + "'"
Llayer = arcpy.mapping.Layer(r"C:commonGeneParcels.shp")
Llayer.definitionQuery = sql_exp
arcpy.mapping.AddLayer(df, Llayer)
dfNEWextent = Llayer.getExtent()
df.extent = dfNEWextent

PYQGIS Code:

from qgis.core import *
from PyQt4.QtCore import *
from PyQt4.QtGui import QInputDialog
QgsApplication.setPrefixPath("C:Program FilesQGIS Pisabin", True)
QgsApplication.initQgis()
cLayer = iface.mapCanvas().currentLayer()
input_PIN = QInputDialog.getText(None,'Parcel Number','Enter PIN:')
expr = QgsExpression(""""PIN" = '""" + input_PIN + "'")
it = cLayer.getFeatures( QgsFeatureRequest( expr )
ids = [i.id() for i in it]
cLayer.setSelectedFeatures( ids )
iface.mapCanvas().zoomToSelected()