Python Program to Display Words Starting with a Vowel and Ending with a Digit from a Text File

1. Open the File: We’ll begin by opening the text file using the `open()` function.
2. Read and Process Words: With the file open, we’ll read its contents word by word, splitting at spaces.
3. Pattern Matching: For each word, we’ll check if it starts with a vowel (A, E, I, O, U, or their lowercase counterparts) and ends with a digit (0-9).
4. Display Matching Words: If the word satisfies both conditions, we’ll display it.

def extract_words(file_name):
    try:
        with open(file_name, 'r') as file:
            vowels = 'aeiouAEIOU'
            matching_words = []
            
            for line in file:
                if line:
                    words = line.split()
                    for word in words:
                        if word[0] in vowels and word[-1].isdigit():
                            matching_words.append(word)
            
            return matching_words
    except FileNotFoundError:
        print("File not found.")
        return []

if __name__ == "__main__":
    file_name = input("Enter the name of the text file: ")
    matching_words = extract_words(file_name)
    
    if matching_words:
        print("Words starting with a vowel and ending with a digit:")
        for word in matching_words:
            print(word)
    else:
        print("No matching words found.")

1. The `extract_words()` function takes a filename as an argument.
2. Within the function, we define the string `vowels` containing all vowel characters.
3. We initialize an empty list called `matching_words` to store the words that satisfy the conditions.
4. The program reads the file line by line, splitting each line into individual words.
5. For each word, we check if its first character is a vowel and its last character is a digit. If both conditions are met, the word is added to the `matching_words` list.
6. In the `__main__` block, the user is prompted to provide the name of the text file.
7. The `extract_words()` function is called with the provided file name, and the matching words are stored in the `matching_words` list.
8. If there are matching words, the program displays them. Otherwise, it notifies the user that no matching words were found.

1. Save the code in a `.py` file (e.g., `vowel_digit_extractor.py`).
2. Place the text file you want to analyze in the same directory as the Python script.
3. Open a terminal and navigate to the directory containing the script.
4. Run the script using the command: `python vowel_digit_extractor.py`.
5. Follow the prompts to enter the name of the text file.
6. The program will display the words that start with a vowel and end with a digit from the specified text file.