Python中带索引的字符串拆分

Python中带索引的字符串拆分

我认为返回相应接头的开始和结束更为自然。例如（0，4）而不是（0，3）

>>> from itertools import groupby>>> def splitWithIndices(s, c=' '):...  p = 0...  for k, g in groupby(s, lambda x:x==c):...   q = p + sum(1 for i in g)...   if not k:...    yield p, q # or p, q-1 if you are really sure you want that...   p = q...>>> a = "This is a sentence">>> list(splitWithIndices(a))[(0, 4), (5, 7), (8, 9), (10, 18)]>>> a[0:4]'This'>>> a[5:7]'is'>>> a[8:9]'a'>>> a[10:18]'sentence'