added project

Author: Rimjhim20

OOPs Library/README.md

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+# OOPs Library Using Python🔥
+
+Motive of this project is to create an “Online Library Management System.”
+
+## 📌Let’s Create 
+- Python has a large collection of libraries due to the very active community which serves various purposes.
+
+For this Project, We have to create a library class that includes the following methods:
+
+- Displaybook() : To display the available books
+- Lendbook(): To lend a book to a user
+- Addbook(): To add a book to the library
+- Returnbook(): To return the book to the library.
+
+
+As we have created a library class, now we will create an object and pass the following parameters in the constructor.
+
+demo=Library(listofbooks, library_name)
+
+After that, create a main function and run an infinite while loop that asks the users for their input whether they want to display, lend, add or return a book.
+
+This is how we can build our OOPs Library with Python.
+Happy Coding!!

OOPs Library/oops_library.py

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+class Library:
+    def __init__(self, list, name):
+        self.booksList = list
+        self.name = name
+        self.lendDict = {}
+    def displayBooks(self):
+        print(f"We have following books in our library: {self.name}")
+        for book in self.booksList:
+            print(book)
+    def lendBook(self, user, book):
+        if book not in self.lendDict.keys():
+            self.lendDict.update({book:user})
+            print("Lender-Book database has been updated. You can take the book now")
+        else:
+            print(f"Book is already being used by {self.lendDict[book]}")
+    def addBook(self, book):
+        self.booksList.append(book)
+        print("Book has been added to the book list")
+    def returnBook(self, book):
+        self.lendDict.pop(book)
+if __name__ == '__main__':
+    demo = Library(['Python', 'Rich Daddy Poor Daddy', 'Harry Potter', 'C++ Basics', 'Algorithms by CLRS'], "Programmer")
+    while(True):
+        print(f"Welcome to the {demo.name} library. Enter your choice to continue")
+        print("1. Display Books")
+        print("2. Lend a Book")
+        print("3. Add a Book")
+        print("4. Return a Book")
+        user_choice = input()
+        if user_choice not in ['1','2','3','4']:
+            print("Please enter a valid option")
+            continue
+        else:
+            user_choice = int(user_choice)
+        if user_choice == 1:
+            demo.displayBooks()
+        elif user_choice == 2:
+            book = input("Enter the name of the book you want to lend:")
+            user = input("Enter your name")
+            demo.lendBook(user, book)
+        elif user_choice == 3:
+            book = input("Enter the name of the book you want to add:")
+            demo.addBook(book)
+
+        elif user_choice == 4:
+            book = input("Enter the name of the book you want to return:")
+            demo.returnBook(book)
+        else:
+            print("Not a valid option")
+        print("Press q to quit and c to continue")
+        user_choice2 = ""
+        while(user_choice2!="c" and user_choice2!="q"):
+            user_choice2 = input()
+            if user_choice2 == "q":
+                exit()
+            elif user_choice2 == "c":
+                continue