Question

Write a program to create a binary file with name and roll number. Search for a given roll
number and display the name, if not found display appropriate
message.

Answer 1

Answer:

good night

Explanation:

have a peaceful and relaxing sleep

Answer 2

Answer:

x={}

def make_file(x):

   o=open("new_file.dat","wb")

   import pickle as p

   xx=int(input("How many values you want to input="))

   for i in range(xx):

       y=int(input("Enter roll_no="))

       z=input("Enter name=")

       x.update({y:z})

       print()

   p.dump(x,o)

   o.close()

   return x

def file_search():

   o=open("new_file.dat","rb")

   import pickle as p

   

   k=p.load(o)

   d=input("enter the roll no=")

   if d not in k:

       print("Invalid roll number")

   else:

       

   

   

       print(a[d])

   

a=make_file(x)

file_search()

   

       

   

Explanation:

This should do the trick,

Cs practical is a pain isn't it?