原文:https://docs.scipy.org/doc/numpy/reference/generated/numpy.core.defchararray.chararray.rfind.html
校对:(虚位以待)
chararray.
rfind
(sub, start=0, end=None)[source]For each element in self, return the highest index in the string where substring sub is found, such that sub is contained within [start, end].
也可以看看
char.rfind