The value of valid_idx would always be overwritten by the if block.
I think the author intended to write:
if not valid_idx:
valid_idx = 0
But forgot the not in the condition. In fact instead of adding the not we can get rid of the if block and set the valid_idx parameter to a default value of 0.
Before this update, omitting to give the optional parameter valid_idx would produce an exception.
carpedm20
commented
5 years ago
The value of
valid_idxwould always be overwritten by the if block. I think the author intended to write:But forgot the
notin the condition. In fact instead of adding thenotwe can get rid of the if block and set thevalid_idxparameter to a default value of 0.Before this update, omitting to give the optional parameter
valid_idxwould produce an exception.