ArrayList Copying a Text File - Python Programming Exercise

import os

class ArrayList:
    """A class to simulate an ArrayList-like structure using a Python list."""
    
    def __init__(self):
        """Initialize the ArrayList with an empty list."""
        self.array = []  # The underlying list to store elements

    def add(self, element):
        """Adds an element to the end of the ArrayList."""
        self.array.append(element)
    
    def get(self, index):
        """Returns the element at the specified index."""
        try:
            return self.array[index]
        except IndexError:
            print(f"Error: Index {index} out of range.")
            return None
    
    def size(self):
        """Returns the number of elements in the ArrayList."""
        return len(self.array)
    
    def display(self):
        """Displays all elements in the ArrayList."""
        if self.size() == 0:
            print("The list is empty.")
        else:
            for element in self.array:
                print(element, end="")
    
    def clear(self):
        """Removes all elements from the ArrayList."""
        self.array.clear()

def read_file(file_name):
    """Reads the content of a file and stores it in an ArrayList."""
    array_list = ArrayList()
    try:
        with open(file_name, 'r') as file:
            for line in file:
                array_list.add(line)
        print(f"File '{file_name}' read successfully.")
    except FileNotFoundError:
        print(f"Error: File '{file_name}' not found.")
    except PermissionError:
        print(f"Error: Permission denied to read the file '{file_name}'.")
    except Exception as e:
        print(f"An unexpected error occurred while reading the file: {e}")
    
    return array_list

def write_file(file_name, array_list):
    """Writes the content of the ArrayList to a new file."""
    try:
        with open(file_name, 'w') as file:
            for line in array_list.array:
                file.write(line)
        print(f"File '{file_name}' written successfully.")
    except PermissionError:
        print(f"Error: Permission denied to write to the file '{file_name}'.")
    except Exception as e:
        print(f"An unexpected error occurred while writing to the file: {e}")

def main():
    """Main function to duplicate the contents of a text file."""
    source_file = input("Enter the name of the source text file to duplicate: ")
    destination_file = input("Enter the name for the destination file: ")

    # Read content from source file
    array_list = read_file(source_file)
    
    # Write content to destination file
    if array_list.size() > 0:
        write_file(destination_file, array_list)
    else:
        print("No content to write to the destination file.")

# Run the program
if __name__ == "__main__":
    main()

 Output

Enter the name of the source text file to duplicate: source.txt
Enter the name for the destination file: destination.txt
File 'source.txt' read successfully.
File 'destination.txt' written successfully.