#print list
list=['a','x','d','c']
list.append('y')
print ('Apended a new field {}'.format(list))
list.pop()
print ('Popped an field {}'.format(list))
list.sort()
print ('Sorted these letters {}'.format(list))
num=['4', '8','9','10']
num.reverse()
print ('Reverse Number is {}'.format(num))
