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#takes a string and created a slice for every time a specific value appears 
#in a string. This one creats a multidict that slices independently of each value.


def set_string_indexer(string, set):
# returns all indexes for which a value in a set appears in a string, in the
#form of a multidict
	indices, istring = {x:[] for x in set}, list(string)
	for s in istring:
		if s in set:
			indices[s].append(istring.index(s))
			istring[istring.index(s)] ='X'
	return indices
def string_slicer(string, value):
	slices, indices = [], string_indexer(string, value)
	stopslice = 0
	while stopslice < len(indices) - 1:
		start, end = indices[stopslice], indices[stopslice+1]
		slices.append(string[start:end])
		stopslice += 1
	return slices
def set_string_slicer(string, set):
	indices = set_string_indexer(string, set)
	slices = {x:string_slicer(string, x) for x in indices.keys()}
	return slices