Queue Data Struture

 queue=[]

try:

while True:

print("1 enqueue")

print("2 dequeue")

print("3 print all elements")

print("4 exit")

i=int(input("enter your option: "))

if i==1:

t=input("Enter element to be pushed: ")

queue.append(t)

elif i==2:

print("Element out of the queue ",queue.pop(0))

elif i==3:

print("elements in the queue ",end=":")

for i in queue:

print(i,end="\t")

print()

elif i==4:

break

else:

continue

except Exception as e:

print(e)