Python 3 assert statements

The syntax is a bit differenf from other Python functions;

num = 2
assert num == 1, "Message to print when assertion failed"

I am trying out a new way for me to use assertion statements in normal code flow;

    assert len(address) > 0, "Address is required"
    assert type(zip) is num, "Zip code is not a number"
    assert valid_users.get(name) is not None, "User does not exist"
except AssertionError as e: