Create a FIFO QueueΒΆ

Q = queue.Queue()
Q.put(str(i))
Q.get()

Create a FIFO Queue.
Expected output:
0 1 2 3
import queue

Q = queue.Queue()

# insert items at the end of the queue
for i in range(4):
    Q.put(str(i))

# remove items from the head of the queue
while not Q.empty():
    print(Q.get(), end=" ")

Output:

0 1 2 3