Now Mr. Zack has given the following code to modify the records of employees from employee.dat used in above code. He has to increase Rs. 2000 in the salary of those who are getting less than 15000. Mr. Zack has to find the records and change the salary in place. His teacher gave him partial code. Help him to complete the code.

import pickle as pk

found=False

emp={}

fin = ___________ #1 statement : open file both in read write mode

# read from file

try:

while true:

pos= _______ #2 store file pointer position before reading record

emp=_______ #3 to read the record in emp dictionary

if emp[‘salary’]<15000:

emp[‘salary’]+=10000

_________ #4 place file pointer at exact location of record

pickle.dump(emp,fin)

found=True

except EOFError:

if found==False:

print(“record not found”)

else:

print(“successfully updated”)

fin.close()