Clase Más - Python Programming Exercise

def more_like_unix(file_name):
    """
    Mimics the behavior of the Unix 'more' command.
    Displays the contents of a text file in chunks of 24 lines, truncating each line to 79 characters.
    Pauses after each chunk, waiting for the user to press Enter to continue.
    
    Parameters:
    file_name (str): The name of the file to display.
    """
    try:
        # Open the file in read mode
        with open(file_name, 'r') as file:
            # Read all lines from the file
            lines = file.readlines()
            
            # Process the lines in chunks of 24
            total_lines = len(lines)
            chunk_size = 24
            for i in range(0, total_lines, chunk_size):
                # Take a chunk of 24 lines
                chunk = lines[i:i + chunk_size]
                
                # Truncate each line to 79 characters
                truncated_chunk = [line[:79] for line in chunk]
                
                # Print the chunk of lines
                for line in truncated_chunk:
                    print(line)
                
                # If there are more lines to display, prompt user to continue
                if i + chunk_size < total_lines:
                    input("\nPress Enter to continue...")
                else:
                    print("\nEnd of file reached.")
                    break

    except FileNotFoundError:
        print(f"The file '{file_name}' was not found.")
    except Exception as e:
        print(f"An error occurred: {e}")


# Example usage
if __name__ == "__main__":
    file_name = input("Enter the file name to display: ")
    more_like_unix(file_name)

 Output

Enter the file name to display: example.txt

Line 1: This is a sample line of text that might be truncated if it's too long.
Line 2: Another line of text that will be truncated at 79 characters.
Line 3: This is a third line, also truncated to fit within the width.
...
Line 24: The 24th line of the current chunk.

Press Enter to continue...