File Search Operations - Python Programming Exercise

def search_in_file(file_path, search_text):
    """Search for the given text in the specified file and return matching lines."""
    try:
        with open(file_path, 'r') as file:
            lines = file.readlines()
            matches = [line.strip() for line in lines if search_text.lower() in line.lower()]
            
            if matches:
                return matches
            else:
                return None
    except FileNotFoundError:
        print(f"Error: The file '{file_path}' was not found.")
        return None
    except Exception as e:
        print(f"An error occurred: {e}")
        return None


def main():
    # Get the file path and search text from the user
    file_path = input("Enter the path of the text file: ")
    search_text = input("Enter the word or phrase to search for: ")

    # Perform the search
    result = search_in_file(file_path, search_text)

    # Display results
    if result is not None:
        if result:
            print(f"\nLines containing '{search_text}':")
            for line in result:
                print(line)
        else:
            print(f"No lines found containing '{search_text}'.")
    else:
        print("No results to display.")


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

 Output

Enter the path of the text file: example.txt
Enter the word or phrase to search for: Python

Lines containing 'Python':
Python is a great programming language.
I am learning Python for data science.