Better implement for using Enum

[Harry-Jing]

Also format code by using black

Already tested on my computer

[Harry-Jing]

I explained why at #100

[danparizher]

Since this is a reformatting PR using Black, it makes sense to reorder imports using isort according to PEP8 standards:

import argparse
import asyncio
import json
import os
import random
import sys
import uuid
from enum import Enum
from typing import Generator, Literal, Optional, Union

import requests
import websockets.client as websockets

Feel free to add to your PR if you agree

[Harry-Jing]

I did not find the relevant criteria in pep8, The elements related to the import order are the following.

---

• Imports are always put at the top of the file, just after any module comments and docstrings, and before module globals and constants.
  Imports should be grouped in the following order:

  1. Standard library imports.
  2. Related third party imports.
  3. Local application/library specific imports.

  You should put a blank line between each group of imports

---

Sorting by word length first, then alphabetically is my personal habit.

[BeautyyuYanli]

#100 (comment)

No need to support str as the argument. It can be verbose. str is just for cli command input, not sdk functions.

[acheong08]

I'll merge this and then format with pre-commit

[acheong08]

working well.