trying to recall a regex for re.split()

[Gribouillis]

is there a tool to create that which i could use (Python 3.6,Ubuntu 18.04, Firefox 100)?

I created the image by using a tool named jsyntrax. Unfortunately, it does not parse the regular expression, so I had to write my interpretation of the regular expression in a .spec file

indentstack(
    10,
    line(
        opt(choice('+', '-')),
        loop(None, ' '),
        choice(
            line(
                loop('0-9', None),
                opt(line('.', loop(None, '0-9')))),
            line('.', loop('0-9', None)))),
    opt(
        line(
            choice('e','E'),
            opt(choice('+', '-')),
            loop('0-9', None))))

jsyntrax runs on java. The only thing to do is to dowload the zip file, uncompress and run. There is also a Python syntrax module on pypi, but it seems abandoned by the author who switched to Java because of multiplatform concerns. I had an exception while trying to use Python's syntrax module. I don't want this module to die, I think I'm going to fork my own version.

It should not be too difficult to write a regex parser to convert a regular expression to such a diagram. I have already used Syntrax for a parsing project and it worked well. Perhaps I'll do it when I find some time to do so.