Progress bars are a useful tool to display information to the user while a long-running task is being executed (e.g.
when downloading or uploading files). `huggingface_hub` exposes a [`~utils.tqdm`] wrapper to display progress bars in a
consistent way across the library.  
By default, progress bars are enabled. You can disable them globally by setting `HF_HUB_DISABLE_PROGRESS_BARS`
environment variable. You can also enable/disable them using [`~utils.enable_progress_bars`] and
[`~utils.disable_progress_bars`]. If set, the environment variable has priority on the helpers.  
```py
>>> from huggingface_hub import snapshot_download
>>> from huggingface_hub.utils import are_progress_bars_disabled, disable_progress_bars, enable_progress_bars

>>> # Disable progress bars globally
>>> disable_progress_bars()

>>> # Progress bar will not be shown !
>>> snapshot_download("gpt2")

>>> are_progress_bars_disabled()
True

>>> # Re-enable progress bars globally
>>> enable_progress_bars()
```