How to use the arcgis.ArcGIS function in arcgis

def test_count(self):
        states = ArcGIS("http://tigerweb.geo.census.gov/arcgis/rest/services/Basemaps/CommunityTIGER/MapServer")
        count = states.get(28, count_only=True)
        self.assertEqual(count, 56)
        count = states.get(28, where="NAME = 'Florida'", count_only=True)
        # Only one Florida.
        self.assertEqual(count, 1)

def test_field_filter(self):
        districts = ArcGIS("http://services.arcgis.com/P3ePLMYs2RVChkJx/ArcGIS/rest/services/USA_Congressional_Districts/FeatureServer")
        # How many fields are there in the layer?
        num_fields = districts.enumerate_layer_fields(0)
        self.assertEqual(len(num_fields), 12)
        # We should only have one property, OBJECTID.
        features = districts.get(0, where="STATE_ABBR = 'IN'", fields=['OBJECTID'])
        self.assertEqual(len(features.get('features')[0].get('properties')), 1)

def test_multiple(self):
        districts = ArcGIS("http://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Legislative/MapServer")
        # Gets 114th and 113th congressional districts for hawaii.
        features = districts.getMultiple([0, 12], where="STATE = 15")
        self.assertEqual(len(features.get('features')), 4)

def test_features(self):
        districts = ArcGIS("http://services.arcgis.com/P3ePLMYs2RVChkJx/ArcGIS/rest/services/USA_Congressional_Districts/FeatureServer")
        features = districts.get(0, "STATE_ABBR = 'IN'")
        # Make sure we have all of the actual congressional
        # district shapes for Indiana.
        self.assertEqual(len(features.get('features')), 9)
        # Make sure they're polygons
        self.assertEqual(features.get('features')[0].get('geometry').get('type'), "Polygon")
        # Make sure it's valid json when we dump it 
        self.assertTrue(features == json.loads(json.dumps(features)))
        # Make sure a value that should be there is ther.
        self.assertEqual(features.get('features')[0].get('properties').get('STATE_ABBR'), 'IN')

parser.add_argument('url', type=str,
                   help='The base address of the ArcGIS web instance')
	parser.add_argument('folder', type=str,
                   help='The folder containing the map')
	parser.add_argument('map', type=str,
                   help='The map name')
	parser.add_argument('layer', type=int,
                   help='The layer id within the map')
	parser.add_argument('--where', type=str, default="1 = 1",
					help="A SQL-like WHERE clause to filter the data.")
	parser.add_argument('--count_only', action='store_true',
					help="Returns only a count of the features that will be returned")

	args = parser.parse_args()

	arc = arcgis.ArcGIS(args.url, args.folder, args.map)
	
	print json.dumps(arc.get(args.layer, where=args.where, count_only=args.count_only))