Page 9 - PYTHON-12

OR

(b) def Unique_Words(filename):
try:
with open(filename, 'r') as file:
text = file.read()
words = text.split()
return set(words)
except FileNotFoundError:
return "File not found."
Note: Users can take any filename.
30. (a) Consider a dictionary containing names and fees as key-value pairs of 5 doctors. Write a program with
separate user-defined functions to perform the following operations: (3)
(i) Push the keys (name of the doctors) of the dictionary into a Stack where the corresponding value
(fees) is greater than 1000.
(ii) Pop and display the contents of the Stack.
The dictionary should be as follows:
doc={"Reena":500, "Amrita": 1000, "Shama":900, "Vishal":1500, "Vyom":2000}
Then the output will be:

Vishal, Vyom
OR
(b) Write functions in Python, do_push(Num) and do_pop(Num), to add a new number and delete a
number from a list of numbers, considering them to act as push and pop operations of the
Stack data structure.
Ans. (a) def push(stk,item):
stk.append(item)
def pop(stk):
if stk==[]:
return None
else:
return stk.pop()
stk=[]
doc={"Reena":500, "Amrita": 1000, "Shama":900, "Vishal":1500, "Vyom":2000}
for i in doc:
if doc[i] > 1000:
push(stk,i)
while True:
if stk!=[]:
print(pop(stk),end=" ")
else:
break
OR

(b) def do_push(Num):
a=int(input("Enter a number:"))
Num.append(a)
def do_pop(Num):
if(Num==[]):
print("stack empty")
else:
print("Deleted element",Num.pop())

A.40 Computer Science with Python–XII