Question

A binary file “STUDENT.DAT” has structure (admission_number, Name,

Percentage). Write a function countrec() in Python that would read contents

of the file “STUDENT.DAT” and display the details of those students whose

percentage is above 75. Also display number of students scoring above 75%.​

Answer 1

Question:

A binary file “STUDENT.DAT” has structure (admission_number, Name,

Percentage). Write a function countrec() in Python that would read contents

of the file “STUDENT.DAT” and display the details of those students whose

percentage is above 75. Also display number of students scoring above 75%.

Solution:

import pickle

def CountRec():

fobj=open("STUDENT.DAT","rb")

num = 0

try:

while True:

rec=pickle.load(fobj)

if rec[2] > 75:

print(rec[0],rec[1],rec[2],sep="\t")

num = num + 1

except:

fobj.close()

return num

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Answer 2

Answer:

def count():

   import pickle

   count=0

   f=open("attendance.dat","rb")

   while True:

       try:

           x=pickle.load(f)

           p=x[2]/x[3]*100

           if p<75:

               print(x)

               count+=1

       except:

           break

   print(count)

   f.close()

Explanation:

hope this helps!