queue.py

# Python program to 
# demonstrate implementation of 
# queue using queue module 


from queue import Queue 

# Initializing a queue 
q = Queue(maxsize = 3) 

# qsize() give the maxsize 
# of the Queue 
print(q.qsize()) 

# Adding of element to queue 
q.put('a') 
q.put('b') 
q.put('c') 

# Return Boolean for Full 
# Queue 
print("\nFull: ", q.full()) 

# Removing element from queue 
print("\nElements dequeued from the queue") 
print(q.get()) 
print(q.get()) 
print(q.get()) 

# Return Boolean for Empty 
# Queue 
print("\nEmpty: ", q.empty()) 

q.put(1) 
print("\nEmpty: ", q.empty()) 
print("Full: ", q.full()) 

# This would result into Infinite 
# Loop as the Queue is empty. 
# print(q.get())