parser = argparse.ArgumentParser(description='Export a view as an image, PDF, or CSV')

parser.add_argument('--server', '-s', required=True, help='server address')

parser.add_argument('--username', '-u', required=True, help='username to sign into server')

parser.add_argument('--site', '-S', default=None)

parser.add_argument('-p', default=None)

parser.add_argument('--logging-level', '-l', choices=['debug', 'info', 'error'], default='error',

help='desired logging level (set to error by default)')

group = parser.add_mutually_exclusive_group(required=True)

group.add_argument('--pdf', dest='type', action='store_const', const=('populate_pdf', 'PDFRequestOptions', 'pdf',

'pdf'))

group.add_argument('--png', dest='type', action='store_const', const=('populate_image', 'ImageRequestOptions',

'image', 'png'))

group.add_argument('--csv', dest='type', action='store_const', const=('populate_csv', 'CSVRequestOptions', 'csv',

'csv'))

parser.add_argument('--file', '-f', help='filename to store the exported data')

parser.add_argument('--filter', '-vf', metavar='COLUMN:VALUE',

help='View filter to apply to the view')

parser.add_argument('resource_id', help='LUID for the view')

args = parser.parse_args()

if args.p is None:

password = getpass.getpass("Password: ")

else:

password = args.p

# Set logging level based on user input, or error by default

logging_level = getattr(logging, args.logging_level.upper())

logging.basicConfig(level=logging_level)

tableau_auth = TSC.TableauAuth(args.username, password, args.site)

server = TSC.Server(args.server, use_server_version=True)

with server.auth.sign_in(tableau_auth):

views = filter(lambda x: x.id == args.resource_id,

TSC.Pager(server.views.get))

view = views.pop()

# We have a number of different types and functions for each different export type.

# We encode that information above in the const=(...) parameter to the add_argument function to make

# the code automatically adapt for the type of export the user is doing.

# We unroll that information into methods we can call, or objects we can create by using getattr()

(populate_func_name, option_factory_name, member_name, extension) = args.type

populate = getattr(server.views, populate_func_name)

option_factory = getattr(TSC, option_factory_name)

if args.filter:

options = option_factory().vf(*args.filter.split(':'))

else:

options = None

if args.file:

filename = args.file

else:

filename = 'out.{}'.format(extension)

populate(view, options)

with file(filename, 'wb') as f:

if member_name == 'csv':

f.writelines(getattr(view, member_name))

else: