from solution import Queue
q1 = Queue(1, 2, 3)
print(q1)
q1.append(4, 5)
print(q1)
qx = q1.copy()
print(qx.pop())
print(qx)
q2 = q1.copy()
print(q2)
print(q1 == q2, id(q1) == id(q2))
q3 =
q2.next ()
print(q1, q2, q3, sep = '\n')
print(q1 + q3)
q3.extend(Queue(1, 2))
print(q3)
q4 = Queue(1, 2)
q4 += q3 >> 4
print(q4)
q5 = next(q4)
print(q4)
print(q5)