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pythonquestions.py

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+'''
+Write a function data_type_ops() that takes an integer, a float, a string, a list, a dictionary, and a set as input.
+The function should perform the following operations:
+1. Add 5.0 to the integer.
+2. Divide the float by 2
+3. Concatenate the string with your name.
+4. Append  a new value  to the list.
+5. Add a new key-value pair to the dictionary with key "new_key" and value "new_value".
+6. Add a value v to the set.
+
+'''
+
+def data_type_ops(integer, floating, string, lst, dct, st, new_value, v):
+
+    updated_integer = integer + 5.0
+
+    # 2. Divide the float by 2
+    updated_float = floating / 2
+
+    # 3. Concatenate the string with your name
+    updated_string = string + " Kaushik"
+
+    # 4. Append a new value to the list
+    lst.append(new_value)
+
+    # 5. Add a new key-value pair to the dictionary
+    dct["new_key"] = "new_value"
+
+    # 6. Add a value to the set
+    st.add(v)
+
+    return updated_integer, updated_float, updated_string, lst, dct, st
+
+'''
+Write a function num_processor() that takes a list of integers and performs the following operations:
+1. Filter out all even numbers.
+2. Square the remaining odd numbers.
+3. Return the sum of the squared numbers.
+
+'''
+def num_processor(num_list):
+
+    # 1. Filter out even numbers
+    odd_numbers = filter(lambda x: x % 2 != 0, num_list)
+
+    # 2. Square the remaining odd numbers
+    squared_numbers = [x**2 for x in odd_numbers]
+
+    # 3. Return the sum of the squared numbers
+    return sum(squared_numbers)
+
+'''
+Write a program that reads a string and prints the number of vowels in it.
+'''
+def count_vowels(string):
+    """Count the number of vowels in a string."""
+    vowels = "aeiouAEIOU"
+    count = sum(1 for char in string if char in vowels)
+    return count
+
+'''
+4. LIBRARY MANAGEMENT SYSTEM
+'''
+
+class Library:
+    def __init__(self):
+        self.books = {}
+
+    def add_book(self, book):
+
+        self.books[book] = self.books.get(book, 0) + 1
+        print(f'Book "{book}" added to the library.')
+
+    def borrow_book(self, book):
+
+        if self.books.get(book, 0) > 0:
+            self.books[book] -= 1
+            print(f'You borrowed "{book}".')
+        else:
+            print(f'Sorry, "{book}" is not available.')
+
+    def return_book(self, book):
+
+        self.books[book] = self.books.get(book, 0) + 1
+        print(f'Book "{book}" returned to the library.')
+
+    def display_inventory(self):
+
+        if not self.books:
+            print("The library is empty.")
+        else:
+            print("Current inventory:")
+            for book, count in self.books.items():
+                print(f'{book}: {count} copies')
+
+def main():
+    library = Library()
+    while True:
+        print("\nLibrary Management System")
+        print("1. Add Book")
+        print("2. Borrow Book")
+        print("3. Return Book")
+        print("4. Display Inventory")
+        print("5. Exit")
+
+        choice = input("Enter your choice: ")
+
+        if choice == "1":
+            book = input("Enter the name of the book to add: ")
+            library.add_book(book)
+        elif choice == "2":
+            book = input("Enter the name of the book to borrow: ")
+            library.borrow_book(book)
+        elif choice == "3":
+            book = input("Enter the name of the book to return: ")
+            library.return_book(book)
+        elif choice == "4":
+            library.display_inventory()
+        elif choice == "5":
+            print("Exiting the Library Management System. Goodbye!")
+            break
+        else:
+            print("Invalid choice. Please try again.")
+
+if __name__ == "__main__":
+    main()