'the literal ' (3910 / 478 / 2716)
Non-Capturing Group(?:text|created_at) textthe literal text text (case sensitive) 2nd Alternativecreated_at created_atthe literal text created_at (case sensitive) \s+any whitespace character, repeated at least once
u'the literal text u' (case sensitive) \Kresets the starting point of the reported match. Any previously consumed characters are no longer included in the final match
Negated Character Class[^']* *matches any number of characters outside the set below:
'the literal ' (3910 / 478 / 2716)
g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string