Name generator in Python using our NamesList database

NameGen.py

# Necessary imports for this app
from urllib.request import urlopen
import argparse
import random

# Functions
def genname(num):
  # Get first names
  firstNames = urlopen('https://cdn.jsdelivr.net/gh/EoflaOE/NamesList@master/Processed/FirstNames.txt').read()
  firstNamesArray = firstNames.decode('utf-8').splitlines()
  
  # Get last names
  lastNames = urlopen('https://cdn.jsdelivr.net/gh/EoflaOE/NamesList@master/Processed/Surnames.txt').read()
  lastNamesArray = lastNames.decode('utf-8').splitlines()
  
  # Generate n names
  for x in range(num):
      firstName = firstNamesArray[random.randint(0,len(firstNamesArray))]
      lastName = lastNamesArray[random.randint(0,len(lastNamesArray))]
      print(firstName + " " + lastName)

# Arguments parsing
parser = argparse.ArgumentParser()
parser.add_argument('numberofnames', type=int, help="How many names to generate?")
args = parser.parse_args()

genname(args.numberofnames)