TEXT FILES IN PYTHON - Copying lines to a new file & Replacing the '-' sign with a blankspace

# Python program to copy lines from one file to another
# and replace '-' with blank spaces

def copy_and_replace():
    try:
        # Open source file in read mode
        with open('source.txt', 'r') as source_file:
            # Open destination file in write mode
            with open('destination.txt', 'w') as dest_file:
                # Read each line from source file
                for line in source_file:
                    # Replace '-' with blank space
                    modified_line = line.replace('-', ' ')
                    # Write modified line to destination file
                    dest_file.write(modified_line)
        
        print("File copied successfully!")
        print("All '-' signs replaced with blank spaces.")
        
    except FileNotFoundError:
        print("Error: Source file not found!")
    except Exception as e:
        print(f"Error: {e}")

def create_sample_file():
    """Create a sample source file for demonstration"""
    sample_content = """Python-is-a-programming-language
Data-structures-are-important
File-handling-in-Python
Text-processing-operations
String-manipulation-techniques"""
    
    with open('source.txt', 'w') as file:
        file.write(sample_content)
    print("Sample source file created!")

def display_files():
    """Display contents of both files"""
    print("\n--- Source File Content ---")
    try:
        with open('source.txt', 'r') as file:
            print(file.read())
    except FileNotFoundError:
        print("Source file not found!")
    
    print("\n--- Destination File Content ---")
    try:
        with open('destination.txt', 'r') as file:
            print(file.read())
    except FileNotFoundError:
        print("Destination file not found!")

# Main program
if __name__ == "__main__":
    print("TEXT FILE OPERATIONS - Copy and Replace")
    print("=" * 40)
    
    # Create sample file
    create_sample_file()
    
    # Copy and replace
    copy_and_replace()
    
    # Display both files
    display_files()