lc_classifier: Modified tqdm pbar import

[sidchaini]

When lc_classifier is extracting features, the current implementation uses the default tqdm module intended for scripts, even if running on an IPy Notebook. tqdm does offer a notebook variant, but, it also offers the ability to infer it automatically through tqdm.auto.

I modified the code to import from tqdm.auto instead of tqdm. This will automatically invoke the right type of progress bar to be used depending on the platform (script v/s notebook).

Summary of the changes

Changed from tqdm import tqdm to from tqdm.auto import tqdm

Observations

This probably adds a very small overhead to the import as tqdm automatically infers the type of platform, namely, it tries in the following order:

• tqdm.autonotebook without import warnings
• tqdm.asyncio
• tqdm.std base class

But, this overhead should still be negligible, and will be helpful for people using it on IPy Notebooks (like me!)

Ref: https://github.com/tqdm/tqdm/blob/master/tqdm/auto.py