nikhil's space

Python Code for File Usage  # 1. Create & Write to a file with open("example.txt", "w") as file:     file.write("Hello, this is line one.\n")     file.write("This is line two.\n") print("File created and written successfully.") # 2. Read the file with open("example.txt", "r") as file:     content = file.read()     print("\nReading file content:")     print(content) # 3. Append to the file with open("example.txt", "a") as file:     file.write("This line was added later.\n") print("Line appended successfully.") # 4. Read again to verify with open("example.txt", "r") as file:     print("\nUpdated file content:")     print(file.read())

Python code for Python Classes class Calculator:     def __init__(self, num1, num2):         self.num1 = num1         self.num2 = num2     def add(self):         return self.num1 + self.num2     def subtract(self):         return self.num1 - self.num2     def multiply(self):         return self.num1 * self.num2     def divide(self):         if self.num2 != 0:             return self.num1 / self.num2         else:             return "Error: Division by zero" # Creating an object of Calculator class calc = Calculator(10, 5) # Using the methods print("Addition:", calc.add()) print("Subtraction:", calc.subtract()) print("Multiplication:", calc.multiply()) print("Division:", calc.divide())