Shi Mu wrote:
> what is the differenc ebetween index and find in the module of string?
> for both "find" and "index", I got the position of the letter.
>>> import string
>>> help(string.find)
Help on function find in module string:
find(s, *args)
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.
Return -1 on failure.
>>> help(string.index)
Help on function index in module string:
index(s, *args)
index(s, sub [,start [,end]]) -> int
Like find but raises ValueError when the substring is not found.
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