lab based on python assignment M.C.A 3rd sem

Python is a general purpose programming language that is often applied in scripting roles.So, Python is programming language as well as scripting language. Python is also called as Interpreted language.

Lets start with question no 1 python assignment.

1. Write a program to create a class, constructor and functions to accept and display the values.

#!/usr/bin/python3

class Atul:

     def __init__(self):
          self.x = input("Enter firstname ")
          self.y = input("Enter lastname ")
     def show(self):
         print("Your firstname is : " , self.x)
         print("Your lastname is : " , self.y)

obj = Atul()
obj.show()

2. WAP using Dictionary to store userid and password and validate the user based on userid and password.

┌──(hackerboy㉿KumarAtulJaiswal)-[~/Desktop/rnc-university-mca/mca-3rdsem-python]
└─$ cat second.py       
#!/usr/bin/python3

from getpass import getpass
import time

a = input("Enter username ")
b = getpass("Enter password ")

#key = [1, 2, 3]
#value = {"java", "android", "web development"}

stored = dict.fromkeys({a},b)

#print(stored)



username = input("Enter username : ")

if username in stored:
   password = input("Enter password : ")
   if stored[username] == password :
      print("Please wait a seond for checking userid and password...")
      time.sleep(2)
      print("Username and password match")
   else:
      print("user entered the wrong password")
else:
    print("your username is not registered")


                                                                                                                                                                        
┌──(hackerboy㉿KumarAtulJaiswal)-[~/Desktop/rnc-university-mca/mca-3rdsem-python]
└─$ 

3. Write a program to create a user defined exception in python and handle the exception using user defined class.

┌──(hackerboy㉿KumarAtulJaiswal)-[~/Desktop/rnc-university-mca/mca-3rdsem-python]
└─$ cat third3.py 
class ValueError(Exception):
    pass
try:
    age= 10
    print("Age is:")
    print(age)
    if age<=0:
        raise ValueError
    yearOfBirth= 2021-age
    print("Year of Birth is:")
    print(yearOfBirth)
except ValueError:
    print("Input Correct age.")
                                                                                                                                                                        
┌──(hackerboy㉿KumarAtulJaiswal)-[~/Desktop/rnc-university-mca/mca-3rdsem-python]
└─$ 

4. Write a program to start different executable files of system such as calculator, notepad, msword etc.

┌──(hackerboy㉿KumarAtulJaiswal)-[~/Desktop/rnc-university-mca/mca-3rdsem-python]
└─$ cat fourth2.py
#!/usr/bin/python3

import os
import subprocess

def Exitapp():
     exit()

application = []
while(True):
       print("1 for notepad.exe ")
       print("2 for calc.exe ")
       print("3 for notepad.exe ")
       print("4 for cmd.exe ")
       print("5 for exit ")


name = int(input("Enter your choice"))

if(num == 1):
    os.system(application)
elseif(num == 2):
    os.system(application)
elseif(num == 3):
    os.system(application)
elseif(num == 4):
    os.system(application)
elseif(num == 5):
    Exitapp()


                                                                                                                                                                        
┌──(hackerboy㉿KumarAtulJaiswal)-[~/Desktop/rnc-university-mca/mca-3rdsem-python]
└─$ 

5. Write a menu-driven program to find the area of a circle, square and rectangle in python.

┌──(hackerboy㉿KumarAtulJaiswal)-[~/Desktop/rnc-university-mca/mca-3rdsem-python]
└─$ cat fifth.py  
#!/usr/bin/python3
import sys
import os
from colorama import Fore, Back, Style

print("\n****************************************")
print("Menu Driven Program")
print(Fore.LIGHTWHITE_EX + "1 For Area of Circle")
print(Fore.LIGHTGREEN_EX + "2 For Area of Square")
print(Fore.LIGHTWHITE_EX + "3 For Area of Rectangle")
print(Fore.LIGHTGREEN_EX + "4 For Quit")
print("****************************************\n")


num=int(input("Enter your choice:"))

if num==1:
   radius=int(input("Enter radius of Circle:"))
   print("Area of Circle",3.14*radius*radius)
     
elif num==2:
     length=int(input("Enter length of Rectangle:"))
     breadth=int(input("Enter breadth of Rectangle:"))
     print("Area of Rectangle:",length*breadth)
     
elif num==3:
     side=int(input("Enter side of Square:"))
     print("Area:",side*side)

elif num==4:
     sys.exit() #break
else:
     print("Wrong Choice")

repeat=input("Do you want to continue? (y/n)")
if repeat=='n'or repeat=='N':
    sys.exit() #break
else:
    os.system("python3 fifth.py")
                                                                                                                                                                        
┌──(hackerboy㉿KumarAtulJaiswal)-[~/Desktop/rnc-university-mca/mca-3rdsem-python]
└─$ 

6. Write a program to insert, update, delete and display the values using dictionary in python.

┌──(hackerboy㉿KumarAtulJaiswal)-[~/Desktop/rnc-university-mca/mca-3rdsem-python]
└─$ cat sixth.py 
#!/usr/bin/python3

import time

a = input("Enter the key attribute : ")
b = input("Enter the value of key attribute : ")

dict = {}



#for insert an element

dict_append = ({a,b})
#key = [a, a, a]
#print(dict_append, key)
print(dict_append)

print("Please wait a second")
time.sleep(2)
print("Now we will use update")

#for update an element
stored = dict.update({a:b})
dict['salary'] = 1000
print("Updated Dict is: ", dict)
print(stored)


#for delete an element
sixMonths = {1:31, 2:28, 3:31, 4:30, 5:31, 6:"joker"}
print(sixMonths.popitem())
print(sixMonths)

                                                                                                                                                                        
┌──(hackerboy㉿KumarAtulJaiswal)-[~/Desktop/rnc-university-mca/mca-3rdsem-python]
└─$ 

7. Create a Digital clock using tkinter in python.

┌──(hackerboy㉿KumarAtulJaiswal)-[~/Desktop/rnc-university-mca/mca-3rdsem-python]
└─$ cat seventh.py
#!/usr/bin/python3

from tikinter import *
import time

win = Tk()
win.title("Digital Clock")
win.geometry("400 x 150")
label = label(win.font="Arial", 60, "bold", bg="yellow", font="red", col=25)

label.grid(row=0, column=1)

def clock():
    t1.time.strftime("%H:%M%S")
    label.config(text=t1)
    label.after(1000, clock)

clock()
win.mainloop()

                                                                                                                                                                        
┌──(hackerboy㉿KumarAtulJaiswal)-[~/Desktop/rnc-university-mca/mca-3rdsem-python]
└─$ 

8. Write a program to insert, delete and displaying elements in ascending and descending order using List data type in python.

# List implementation to perform insert, delete and display operations in ascending and descending order

# function to insert elements in the list
def insert_elements(my_list, element):
    my_list.append(element)
    print("Element inserted successfully.")

# function to delete elements from the list
def delete_element(my_list, element):
    if element in my_list:
        my_list.remove(element)
        print("Element deleted successfully.")
    else:
        print("Element not found in the list.")

# function to display elements in ascending order
def display_ascending_order(my_list):
    my_list.sort()
    print("Elements in ascending order:")
    print(*my_list)

# function to display elements in descending order
def display_descending_order(my_list):
    my_list.sort(reverse=True)
    print("Elements in descending order:")
    print(*my_list)

# main function
def main():
    my_list = []
    while True:
        print("1. Insert elements")
        print("2. Delete elements")
        print("3. Display elements in ascending order")
        print("4. Display elements in descending order")
        print("5. Exit")
        choice = int(input("Enter your choice: "))
        if choice == 1:
            element = int(input("Enter the element to be inserted: "))
            insert_elements(my_list, element)
        elif choice == 2:
            element = int(input("Enter the element to be deleted: "))
            delete_element(my_list, element)
        elif choice == 3:
            display_ascending_order(my_list)
        elif choice == 4:
            display_descending_order(my_list)
        elif choice == 5:
            break
        else:
            print("Invalid choice.")

# driver code
if __name__ == '__main__':
    main()

9. Write a program to create a PhoneBook using Dictionary for adding, updating, searching and deleting phone Numbers.

# PhoneBook using Dictionary

# function to add a new contact to the phonebook
def add_contact(phonebook, name, number):
    phonebook[name] = number
    print("Contact added successfully.")

# function to update an existing contact in the phonebook
def update_contact(phonebook, name, number):
    if name in phonebook:
        phonebook[name] = number
        print("Contact updated successfully.")
    else:
        print("Contact not found.")

# function to search for a contact in the phonebook
def search_contact(phonebook, name):
    if name in phonebook:
        print(name, ":", phonebook[name])
    else:
        print("Contact not found.")

# function to delete a contact from the phonebook
def delete_contact(phonebook, name):
    if name in phonebook:
        del phonebook[name]
        print("Contact deleted successfully.")
    else:
        print("Contact not found.")

# main function
def main():
    phonebook = {}
    while True:
        print("1. Add Contact")
        print("2. Update Contact")
        print("3. Search Contact")
        print("4. Delete Contact")
        print("5. Exit")
        choice = int(input("Enter your choice: "))
        if choice == 1:
            name = input("Enter name: ")
            number = input("Enter phone number: ")
            add_contact(phonebook, name, number)
        elif choice == 2:
            name = input("Enter name: ")
            number = input("Enter phone number: ")
            update_contact(phonebook, name, number)
        elif choice == 3:
            name = input("Enter name: ")
            search_contact(phonebook, name)
        elif choice == 4:
            name = input("Enter name: ")
            delete_contact(phonebook, name)
        elif choice == 5:
            break
        else:
            print("Invalid choice.")

# driver code
if __name__ == '__main__':
    main()

10. WAP in python to store students details in csv file.

#!/usr/bin/python

import csv 

header = ['sname', 'class', 'roll no', 'subject']

data = [['Atul', 'MCA', 67], ['Khushboo', 'MCA', 64], ['Priya', 'MCA', 64], ['Tinki', 'MCA', 14], ['Umesh', 'MCA', 66], ['Muskan', 'MCA', 8], ['Sweta', 'MCA', 9]]

filename = 'student_data.csv'

with open(filename, 'w') as file:
     for header in header:
         file.write(str(header) + ', ')
     file.write('\n')
     for row in data:
         for x in row:
             file.write(str(x) + ',')
             file.write('\n')

11. WAP in python to create a decorator and decorate a function.

┌──(hackerboy㉿KumarAtulJaiswal)-[~/Desktop/rnc-university-mca/mca-3rdsem-python]
└─$ cat eleventh.py                                                                                                                                                 1 ⚙
#!/usr/bin/python3

def decorator_function(func):
    def wrapper_function(*args, **kwargs):
        print("Wrapper function executed before {}".format(func.__name__))
        result = func(*args, **kwargs)
        print("Wrapper function executed after {}".format(func.__name__))
        return result
    return wrapper_function

@decorator_function
def display_info(name, age):
    print("Displaying information:")
    print("Name: {}".format(name))
    print("Age: {}".format(age))

display_info("Atul", 30)
                                                                                                                                                                        
┌──(hackerboy㉿KumarAtulJaiswal)-[~/Desktop/rnc-university-mca/mca-3rdsem-python]
└─$                                                                                                                                                                 1 ⚙

12. WAP in python to insert, update, display and delete data in mysql database.

import mysql.connector

# Connect to the database
conn = mysql.connector.connect(
    host="hostname",
    user="username",
    password="password",
    database="database_name"
)

# Create a cursor to execute SQL commands
cursor = conn.cursor()

# Insert data
sql_insert = "INSERT INTO table_name (column1, column2) VALUES (%s, %s)"
val = ("value1", "value2")
cursor.execute(sql_insert, val)
conn.commit()

# Display data
sql_select = "SELECT * FROM table_name"
cursor.execute(sql_select)
rows = cursor.fetchall()
for row in rows:
    print(row)

# Update data
sql_update = "UPDATE table_name SET column1 = %s WHERE column2 = %s"
val = ("new_value1", "value2")
cursor.execute(sql_update, val)
conn.commit()

# Delete data
sql_delete = "DELETE FROM table_name WHERE column2 = %s"
val = ("value2",)
cursor.execute(sql_delete, val)
conn.commit()

# Close the cursor and connection
cursor.close()
conn.close()

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