Although statements normally appear one per line, to squeeze more than one statement onto a single line in Python by separating them with semicolons:
a = 1; b = 2; print(a + b) # Three statements on one line
This is the only place in Python where semicolons are required.
Parentheses are the catch all since any expression can be wrapped in them.
X = (A + B + C + D) if (A == 1 and B == 2 and C == 3): print('test' * 3)
An older rule allows for continuation lines when the prior line ends in a backslash:
X = A + B + \ C + D # An error-prone older alternative