Signature: string.find(s, *args)
Docstring:
find(s, sub [,start [,end]]) -> in
Return the lowest index in s where substring sub is found,
such that sub is contained within s[start,end]. Optional
arguments start and end are interpreted as in slice notation.
有发帖这功夫不如看看函数的文档.
像这样的问题如果都要上网问,那你以后可有得忙了.
