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class 12 computer science practical paper with solution 2023
AISSCE Practical Examination 2021
COMPUTER SCIENCE (083)
Time : 3 Hours M.M. 30
Q1. A binary file “student.dat” has structure [Rollno, Name, Class ]. 7
a) Write a user defined function Create() to input data for a record and add to Student.dat .
b) Write a function Display() in Python to display all records contained in “Student.dat
Q2. Write a program in python to display all the records of table “Teacher” already created in MySQL database named teachers. 5
Q3.Practical File 7
Q4.Project File 8
Q5.Viva-Voce 3
Solution:
Q1 (a)
import pickle
def create():
f=open(“student.dat”,”ab”)
Rollno=int(input(“Enter Roll no: “))
Name=input(“Enter Name of student :”)
Class = input(“Enter class: “)
record=[Rollno, Name, Class]
pickle.dump(record, f)
f.close()
(b)
def display():
f=open(“student.dat”,”rb”)
try:
while True:
record=pickle.load(f)
print(record)
except:
f.close()
Q2.
import mysql.connector
mydb = mysql.connector.connect(host=”localhost”, user=”root”,passwd=”root”, database=”teachers”)
mycursor = mydb.cursor()
mycursor.execute(“Select * from teacher;”)
for i in mycursor:
print(i)
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Class 12 Computer Science Practical File
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