add parameter to wordlist

exist.py

import sys
textfile=sys.argv[1]
param=sys.argv[2]
with open(textfile, "r+") as t:
	for line in t:
		if param in line:
			print("It's already there")
			break
	else:
		t.write(param + "\n")
		print("Done added ")
t.close()

you can use it like this
python3 exist.py wordlist.txt param