login(
   login,                    // account number
   password="PASSWORD",      // password
   server="SERVER",          // server name as it is specified in the terminal
   timeout=TIMEOUT           // timeout
   )

import MetaTrader5 as mt5
# display data on the MetaTrader 5 package
print("MetaTrader5 package author: ",mt5.__author__)
print("MetaTrader5 package version: ",mt5.__version__)

# establish connection to the MetaTrader 5 terminal
if not mt5.initialize():
    print("initialize() failed, error code =",mt5.last_error())
    quit()

# display data on MetaTrader 5 version
print(mt5.version())
# connect to the trade account without specifying a password and a server
account=17221085
authorized=mt5.login(account)  # the terminal database password is applied if connection data is set to be remembered
if authorized:
    print("connected to account #{}".format(account))
else:
    print("failed to connect at account #{}, error code: {}".format(account, mt5.last_error()))

# now connect to another trading account specifying the password
account=25115284
authorized=mt5.login(account, password="gqrtz0lbdm")
if authorized:
    # display trading account data 'as is'
    print(mt5.account_info())
    # display trading account data in the form of a list
    print("Show account_info()._asdict():")
    account_info_dict = mt5.account_info()._asdict()
    for prop in account_info_dict:
        print("  {}={}".format(prop, account_info_dict[prop]))
else:
    print("failed to connect at account #{}, error code: {}".format(account, mt5.last_error()))

# shut down connection to the MetaTrader 5 terminal
mt5.shutdown()

Result:
MetaTrader5 package author:  MetaQuotes Software Corp.
MetaTrader5 package version:  5.0.29
[500, 2367, '23 Mar 2020']

connected to account #17221085

connected to account #25115284
AccountInfo(login=25115284, trade_mode=0, leverage=100, limit_orders=200, margin_so_mode=0, ...
account properties:
   login=25115284
   trade_mode=0
   leverage=100
   limit_orders=200
   margin_so_mode=0
   trade_allowed=True
   trade_expert=True
   margin_mode=2
   currency_digits=2
   fifo_close=False
   balance=99588.33
   credit=0.0
   profit=-45.23
   equity=99543.1
   margin=54.37
   margin_free=99488.73
   margin_level=183084.6054809638
   margin_so_call=50.0
   margin_so_so=30.0
   margin_initial=0.0
   margin_maintenance=0.0
   assets=0.0
   liabilities=0.0
   commission_blocked=0.0
   name=James Smith
   server=MetaQuotes-Demo
   currency=USD
   company=MetaQuotes Software Corp.