Issue 855

[ykumards]

Fixes #855

Description: When warmup_end_value is None, it is set to optimizer initial LR

Check list:

• New tests are added (if a new feature is added)
• New doc strings: description and/or example code are in RST format
• Documentation is updated (if required)

[sdesrozis]

@ykumards Please, don't forget to apply black on sources :) I can't commit in your repo to do it.

LGTM :)

[ykumards]

@ykumards Please, don't forget to apply black on sources :) I can't commit in your repo to do it.

LGTM :)

Oh, we had a hook for that right?

[sdesrozis]

@ykumards Please, don't forget to apply black on sources :) I can't commit in your repo to do it.
LGTM :)

Oh, we had a hook for that right?

Oh maybe during merge because it missed something here. Btw, that's not really important and it was by pure chance that I saw that :)

[ykumards]

@ykumards Please, don't forget to apply black on sources :) I can't commit in your repo to do it.
LGTM :)

Oh, we had a hook for that right?

Oh maybe during merge because it missed something here. Btw, that's not really important and it was by pure chance that I saw that :)

@sdesrozis You were right! Black formatting was off, thanks pointing it out :)

[vfdev-5]

Thanks Yogesh!