def each_cons_iter(listin,n):
"""(overlapp'g)moving window,return n items at a time from listin thru iterator"""
i=0
while (i<len(listin)-n+1 ):
yield listin[i:i+n]
i+=1
def each_slice_iter(listin,n):
"""non-overlapp'g slices n elements at a time from listin,returned thru iterator"""
i=0; len_listin=len(listin)
while (i<len_listin ):
yield listin[i:min(len_listin,i+n)]
i+=n
def each_cons_lol(listin,n):
"""moving window, return (list of lists) of n items at a time"""
return [listin[i:i+n] for i in range(len(listin)-n+1)]
def each_slice_lol(listin,n):
"""non-overlapp'g slices, return (list of lists) """
len_listin=len(listin)
return [listin[i:min(len_listin, i+n)] for i in range(0,len_listin,n)]
