* fix: replace gpt-35-turbo in model name to gpt-3.5-turbo so the name string is in the current chat_model list
* ref: reformatted with black
---------
Co-authored-by: Chi Wang <wang.chi@microsoft.com>
Co-authored-by: Qingyun Wu <qingyun.wu@psu.edu>
* Replace `assert`s in the `conversable_agent` module with `if-log-raise`.
* Use a `logger` object in the `code_utils` module.
* Replace use of `assert` with `if-log-raise` in the `code_utils` module.
* Replace use of `assert` in the `math_utils` module with `if-not-raise`.
* Replace `assert` with `if` in the `oai.completion` module.
* Replace `assert` in the `retrieve_utils` module with an if statement.
* Add missing `not`.
* Blacken `completion.py`.
* Test `generate_reply` and `a_generate_reply` raise an assertion error
when there are neither `messages` nor a `sender`.
* Test `execute_code` raises an `AssertionError` when neither code nor
filename is provided.
* Test `split_text_to_chunks` raises when passed an invalid chunk mode.
* * Add `tiktoken` and `chromadb` to test dependencies as they're used in
the `test_retrieve_utils` module.
* Sort the test requirements alphabetically.
