Question

I am wanting to verify and then parse this string (in quotes):

string = "start: c12354, c3456, 34526; other stuff that I don't care about"
//Note that some codes begin with 'c'

I would like to verify that the string starts with ‘start:’ and ends with ‘;’
Afterward, I would like to have a regex parse out the strings. I tried the following python re code:

regx = r"start: (c?[0-9]+,?)+;" 
reg = re.compile(regx)
matched = reg.search(string)
print ' matched.groups()', matched.groups()

I have tried different variations but I can either get the first or the last code but not a list of all three.

Or should I abandon using a regex?

EDIT: updated to reflect part of the problem space I neglected and fixed string difference.
Thanks for all the suggestions – in such a short time.

Answer 1

In Python, this isn’t possible with a single regular expression: each capture of a group overrides the last capture of that same group (in .NET, this would actually be possible since the engine distinguishes between captures and groups).

Your easiest solution is to first extract the part between start: and ; and then using a regular expression to return all matches, not just a single match, using re.findall('c?[0-9]+', text).