This is codded by Rakesh Giri
rakeshgiree999@gmail.com
#library management system
#create libData.txt to store data
import time
#create libData.txt to store data
import time
import json
class mgmt:
def __init__(self, lib_name, list_of_books):
self.lib_name = lib_name
self.list_of_books = list_of_books
def lib_menu(self):
print("***************************************************")
print(f"** Welcome to : {self.lib_name} ")
print("***************************************************")
print("** Type '1' to display list of books available **")
print("** Type '2' to lend book **")
print("** Type '3' to return book **")
print("** Type '4' to add book **")
print("** Type '5' to exit) **")
print("**_______________________________________________**")
def display_books(self):
print("List of books : ")
i = 1
for book, stock in self.list_of_books.items():
if stock == "on_stock":
print(f"{i}. Book '{book}' is available")
else:
print(f"{i}. Book '{book}' is taken by {stock}.")
i = i + 1
print("** Type any key and press enter to continue :")
input("")
def add_books(self):
print("** Enter the name of book that you want to add : ")
book_name = input("")
if book_name in self.list_of_books:
print("** We already have that book")
else:
dict_2 = {book_name: "on_stock"}
self.list_of_books.update(dict_2)
print("** Updating list of books")
time.sleep(3)
print("** List of books have been updated")
print("** Type any key and press enter to continue :")
mgmt.log_data(self.list_of_books)
input("")
return self.list_of_books
def return_books(self):
print("** Please enter your name :")
ret_ch = input(" ")
res = dict((v, k) for k, v in self.list_of_books.items())
if ret_ch in res:
print(
f"** Sir/Mam..{ret_ch}, You have taken these books on lend :")
print(
f"** Type the number of book which you want to return and press enter :")
i = 1
for book, stock in self.list_of_books.items():
if stock == ret_ch:
print(f"{i}. {book}")
time.sleep(1)
print("** Do you want to return this book ? type 'y' if yes : ")
ret_b = input(" ")
if ret_b == "y":
self.list_of_books[book] = "on_stock"
mgmt.log_data(self.list_of_books)
else:
print("** You chosed to not return this book...")
i = i + 1
else:
print("***************************************************")
time.sleep(3)
else:
print("You have not taken any books")
time.sleep(3)
def lend_books(self):
print("** Please ! Enter your name to lend book : ")
lender = input(" ")
print("** Please ! Type the name of book that you want to lend : ")
lend_book= input(" ")
if lend_book.title() in self.list_of_books:
for book, stock in self.list_of_books.items():
if book==lend_book:
print("** Do you really want to lend this books ? 'y' for yes : ")
r = input(" ")
if r=="y":
self.list_of_books[book] = lender
mgmt.log_data(self.list_of_books)
print("** Successfully updated")
print(f"** You have {book} on lend")
time.sleep(2)
else:
print(f"** You choosed not to lend the book {book}")
time.sleep(2)
else:
print(f"** We do not have {lend_book} book.")
time.sleep(2)
def log_data(data):
with open("libData.txt", "w") as file:
file.write(json.dumps(data))
with open ("libData.txt", "r") as f1:
lib_dict = dict(json.loads(f1.read()))
a = mgmt("Himalayan Library", lib_dict)
while True:
a.lib_menu()
ch = input("** Enter your choice : ")
if (ch == "1"):
a.display_books()
elif (ch == "2"):
a.lend_books()
elif (ch == "3"):
a.return_books()
elif (ch == "4"):
a.add_books()
elif (ch == "5"):
print("Updating the data")
time.sleep(2)
exit()
else:
pass
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