arcgis python 获得坐标

# -*- coding: cp936 -*-
import arcpy

infc = arcpy.GetParameterAsText(0)

# Identify the geometry field
#
desc = arcpy.Describe(infc)
shapefieldname = desc.ShapeFieldName

# Create search cursor
#
rows = arcpy.SearchCursor(infc)

# Enter for loop for each feature/row
#
for row in rows:
    # Create the geometry object
    #
    feat = row.getValue(shapefieldname)

    # Print the current multipoint's ID
    #
    arcpy.AddMessage("Feature %i:" % row.getValue(desc.OIDFieldName))
    print "Feature %i:" % row.getValue(desc.OIDFieldName)
    partnum = 0

    # Step through each part of the feature
    #
    for part in feat:
        # Print the part number
        #
        print "Part %i:" % partnum
        arcpy.AddMessage("Part %i:" % partnum)
        # Step through each vertex in the feature
        #
        i=0
        for pnt in feat.getPart(partnum):
            if pnt:
                # Print x,y coordinates of current point
                #
                print pnt.X, pnt.Y
                arcpy.AddMessage("i="+str(i)+",X="+str(pnt.X)+", Y="+str(pnt.Y))
            else:
                # If pnt is None, this represents an interior ring
                #
                print "Interior Ring:"
                arcpy.AddMessage("Interior Ring:")
            i=i+1
        partnum += 1