pynbody.util.indexing_tricks.indexing_length

pynbody.util.indexing_tricks.indexing_length(sl_or_ar)

Given either an array or slice, return len(ar[sl_or_ar])

This assumes that the slice does not overrun the array, e.g. if an array ar is shorter than the stop index of the slice sl then this routine will return an inaccurate result for len(ar[sl]).

Parameters:

sl_or_ar (slice or array-like) – The slice or array-like object to consider

Returns:

The length of the array after slicing

Return type:

int