I want to fetch the pagePath dimension which does not contain the symbol ? in Google Analytics Reporting API v4 Python client.
The problem is, that all the solutions on the internet suggest using "^((?!\?).)*$" (a negative lookahead). This solution works fine elsewhere, except the Google Analytics Reporting API. As I'm getting the following error:
HttpError: <HttpError 400 when requesting https://analyticsreporting.googleapis.com/v4/reports:batchGet?alt=json returned "Invalid regular expression: '^((?!\?).)*$'. Regular expressions should follow RE2 syntax.">
And I'm unable to find a solution to this. Please mention if I'm doing something wrong, and the correct solution if possible.
The pattern ^((?!\?).)*$ uses a negative lookahead which matches any char except a newline when what is directly on the right is not a ? and that syntax is not supported by re2.
You might simplify that to using a negated character class matching any char 1+ times (to prevent matching an empty string) except a ? or a newline.
^([^?\r\n]+)$
If you want the match only you can omit the parenthesis.