inter thread/process synchronisation it should follow similar pattern to the queue class described above but support the first in last out (filobehaviour of stack and be usable with any number of producer and consumer threads (you can ignore processes for this exercisethe key to implementing the stack is to remember that no data can be read from the stack until there is some data to accessit is therefore necessary to wait for data to become available and then to read it howeverit is producer thread that will provide that data and then inform any waiting threads that there is not data available you can implement this in any way you wishhowever common solution is to use condition to illustrate this ideathe following test program can be used to verify the behaviour of your stackfrom stack stack import stack from time import sleep from threading import thread def producer(stack)for in range( , )data 'taskstr(iprint('producer pushing:'datastack push(datasleep( def consumer(labelstack)while trueprint(label'stack pop():'stack pop()print('create shared stack'stack stack(print('stack:'stackprint('creating and starting consumer threads'consumer thread(target=consumerargs=('consumer 'stack)consumer thread(target=consumerargs=('consumer 'stack)consumer thread(target=consumerargs=('consumer 'stack)consumer start(consumer start(consumer start(print('creating and starting producer thread'producer thread(target=producerargs=[stack]producer start(the output generated from this sample program (which includes print statements from the stackis given below