Finding the location of a character in a string

Question

I have a string: "fdfdfd.dfdfd.dfdfdf.dfdfdf" . I want to get the location of the last dot. I tried this:

Index = re.search(r"\w + '.' \w+$", string)

but it doesn't work. How can I do this?

Answer 1

尝试string.rfind() ： http : string.rfind()例如

"fdfdfd.dfdfd.dfdfdf.dfdfdf".rfind('.')

Answer 2

I could be wrong, but I suspect that what you really want is the tail end of the string (whatever comes after the dot). If so, you can do this:

tail = re.search(r"\.(\w+)$", string).group(1)

Also see @bradley.ayers comment for a simpler answer. I hadn't heard about rpartition till now.