<imgthe literal text <img (case sensitive) .*?any character (except for line terminators), repeated any number of times
srcthe literal text src (case sensitive) \s*any whitespace character, repeated any number of times
=the literal = (6110 / 758 / 3D16)
\s*any whitespace character, repeated any number of times
"the literal " (3410 / 428 / 2216)
'the literal ' (3910 / 478 / 2716)
Group source(?P<source>.*?) .*?any character (except for line terminators), repeated any number of times
\1the text saved by group 1
.*?any character (except for line terminators), repeated any number of times
>the literal > (6210 / 768 / 3E16)