JSONAPI method caller (Minecraft)

#exec(open('script.py').read())

import urllib, urllib.parse, urllib.request
from pprint import pprint
import hashlib
import json

host = "localhost"
port = 65665
usr = "admin"
pwd = "changeme"
salt = "salt"

print("Call method: ")
method = input()
methodToCall = urllib.parse.quote(method)
print("Called "+method)
arg = ""
args = []

while not arg == "q":
    print('Arg (q for quit): ')
    arg = input()
    if not arg == "q":
        args.append(arg)

args = urllib.parse.quote(json.dumps(args))
print("Final args: ")
print(args)

key = hashlib.sha256()
key.update(usr.encode('utf-8'))
key.update(method.encode('utf-8'))
key.update(pwd.encode('utf-8'))
key.update(salt.encode('utf-8'))

key = key.hexdigest()
print(key)

url = "http://{}:{}/api/call?method={}&args={}&key={}".format(host, port, methodToCall, args, key)
print('Tried to access '+url)

f = urllib.request.urlopen(url)
response = json.loads(f.read())
pprint(response)