Python "dictionary"

dictionary.py

#!/usr/bin/env python3
import sys
import requests
from termcolor import colored
from requests.exceptions import JSONDecodeError
from typing import Dict, Union

def make_api_request(word: str) -> Union[Dict, None]:
    url = f"https://api.dictionaryapi.dev/api/v2/entries/en/{word}"

    response = requests.get(url)

    if response.status_code != 200:
        return None
    try:
        return response.json()
    except JSONDecodeError:
        return None

def get_user_input() -> Union[str, None]:
    try:
        input = sys.argv[1]

        if len(input) == 0:
            return None

        return input
    except IndexError:
        return None

def main() -> None:
    input = get_user_input()

    if input is None:
        print(colored('Invalid input.', 'red'), file=sys.stderr)
        sys.exit(-1)

    data = make_api_request(input)

    if data is None or len(data) == 0:
        print(colored('No data for word or word is invalid.', 'red'), file=sys.stderr)
        sys.exit(-1)

    for details in data:
        word = colored(details['word'], 'green')
        try:
            phonetic = colored(details['phonetic'], 'yellow')
        except KeyError:
            phonetic = ''

        for meaning in details['meanings']:
            part_of_speech = colored(meaning['partOfSpeech'], 'cyan')

            print(f"\n{word} {phonetic} {part_of_speech}\n")

            for index, definition in enumerate(meaning['definitions']):
                print(f"{index+1}. {definition['definition']}")

if __name__ == '__main__':
    main()