Question

I have a regular expression that parses a line# string from a log. That line# is then subjected to another regular expression to just extract the line#.

For example:

Part of this regex:

m = re.match(r"^(\d{4}-\d{2}-\d{2}\s*\d{2}:\d{2}:\d{2}),?(\d{3}),?(?:\s+\[(?:[^\]]+)\])+(?<=])(\s+?[A-Z]+\s+?)+(\s?[a-zA-Z0-9\.])+\s?(\((?:\s?\w)+\))\s?(\s?.)+", line)

Will match this:

(line 206)

Then this regex:

re.findall(r'\b\d+\b', linestr)

Gives me

['206']

In order to further process my information I need to have the line number as an integer and am lost for a solution as to how to do that.

Answer 1

You may try:

line_int = int(re.findall(r'\b\d+\b', linestr)[0])

or if you have more than one element in the list:

lines_int = [int(i) for i in re.findall(r'\b\d+\b', linestr)]

or even

lines_int = map(int, re.findall(r'(\b\d+\b)+', linestr))

I hope it helps -^.^-