function to search and display details of student whose rollno is '11' from the binary file student.dat having structure [rollno, name, class and fees].

file.py

import pickle
filename="student.dat"
f=open(filename,"wb")
data=[
 {
 'rollno':11,
 'name':'RM',
 'class':'MCA',
 'fees':54554
 },
 {
 'rollno':12,
 'name':'USER1',
 'class':'MCA',
 'fees':54554
 },
 {
 'rollno':13,
 'name':'USER2',
 'class':'MCA',
 'fees':54554
 }
]
pickle.dump(data,f)
f.close()
print("success")
infile = open(filename,'rb')
dictlist = pickle.load(infile)
infile.close()
for dict1 in dictlist:
 if (dict1["rollno"]==11):
 print("Student found with Roll No 11 , Name : {} | Class : {} | Fees {}".format((dict1["name"]),(dict1["class"]),(dict1["fees"])))

output:

Output

success
Student found with Roll No 11 , Name : RM | Class : MCA | Fees 54554