Find the bug in this Interpreter pattern implementation:

Find the bug in this Interpreter pattern implementation:

class OrExpression:
    def __init__(self, expr1, expr2):
        self.expr1 = expr1
        self.expr2 = expr2
    def interpret(self, context):
        return self.expr1.interpret(context) or self.expr2.interpret

expr = OrExpression(TerminalExpression('A'), TerminalExpression('B'))
print(expr.interpret('A'))