What is the best way to split a list into parts based on an arbitrary number of indexes? E.g. given the code below
indexes = [5, 12, 17]
list = range(20)
return something like this
part1 = list[:5]
part2 = list[5:12]
part3 = list[12:17]
part4 = list[17:]
If there are no indexes it should return the entire list.
This is all that I could think of
def partition(list_, indexes):
if indexes[0] != 0:
indexes = [0] + indexes
if indexes[-1] != len(list_):
indexes = indexes + [len(list_)]
return [ list_[a:b] for (a,b) in zip(indexes[:-1], indexes[1:])]
The plural of index is indices. Going for simplicity/readability.
indices = [5, 12, 17]
input = range(20)
output = []
for i in reversed(indices):
output.append(input[i:])
input[i:] = []
output.append(input)
while len(output):
print output.pop()