Question 1 - Past Year - 3 Mark Questions - Chapter 2 - File Handling in Python

Write a function to write numbers into a binary  file and read the same.

Answer:

def binary_file ():

    import pickle

    f=open( 'data.dat' , 'wb' )

    while True :

        x=int(input( "Enter a number: " ))

        pickle.dump(x,f)

        more=input( 'Want to enter more numbers? Enter Y is yes: ' )

        if more.upper() != 'Y' :

            break

    f.close()

print( "Reading from the binary file" )

f=open( 'data.dat' , 'rb' )

try :

        while True :

            output=pickle.load(f)

            print(output)

    except EOFError:

        pass

    f.close()