"if" statement based on command?

I understand from Python's documentation that I can check conditions with the format:

if x < 0:
else:
    print('Else code')

I want to run a command and check whether that command is successful, but I get a "SyntaxError: invalid syntax" error. Help!

My format is roughly:

if myCommand(parameters):
    print("It worked")
else:
    print("It failed")
    if mySecondCommand(parameters):
        print("2nd command worked")
    else:
        print("2nd command failed")

And here's my actual code using the Netmiko library:

from netmiko import ConnectHandler
if net_connect = ConnectHandler(device_type='cisco_ios', ip='11.22.33.44', username='domain.login', password='DomainPassword'):
    print("Domain login succeeded.")
else:
    print("Domain login failed.")
    if net_connect = ConnectHandler(device_type='cisco_ios', ip='11.22.33.44', username='StandardUsername', password='StandardPassword'):
        print("Standard login worked")
    else:
        print("Standard login failed")

The output I get is:

if net_connect = ConnectHandler(device_type='cisco_ios', ip='11.22.33.444', username='domain.login', password='DomainPassword'):
               ^
SyntaxError: invalid syntax