tensorflow using flags to define command line arguments

import tensorflow as tf

# The first is the parameter name, the second parameter is the default value, and the third is the parameter description
.DEFINE_string('str_name', 'def_v_1',"descrip1")
.DEFINE_integer('int_name', 10,"descript2")
.DEFINE_boolean('bool_name', False, "descript3")

FLAGS = 

# must take arguments, otherwise: 'TypeError: main() takes no arguments (1 given)'; main's parameter names are defined arbitrarily, no requirements
def main(_): 
  print(FLAGS.str_name)
  print(FLAGS.int_name)
  print(FLAGS.bool_name)

if __name__ == '__main__':
  () #fulfillmentmainfunction (math.)