Regular Expressions 101

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"
\?[^w$]*\$$|[]^C]\w+$|w\^|\|..\)
"
gm
1st Alternative
\?[^w$]*\$$
\? matches the character ? with index 6310 (3F16 or 778) literally (case sensitive)
Match a single character not present in the list below
[^w$]
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
w$
matches a single character in the list w$ (case sensitive)
\$ matches the character $ with index 3610 (2416 or 448) literally (case sensitive)
$ asserts position at the end of a line
2nd Alternative
[]^C]\w+$
Match a single character present in the list below
[]^C]
]^C
matches a single character in the list ]^C (case sensitive)
\w
matches any word character (equivalent to [a-zA-Z0-9_])
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
$ asserts position at the end of a line
3rd Alternative
w\^
w matches the character w with index 11910 (7716 or 1678) literally (case sensitive)
\^ matches the character ^ with index 9410 (5E16 or 1368) literally (case sensitive)
4th Alternative
\|..\)
\| matches the character | with index 12410 (7C16 or 1748) literally (case sensitive)
. matches any character (except for line terminators)
. matches any character (except for line terminators)
\) matches the character ) with index 4110 (2916 or 518) literally (case sensitive)
Global pattern flags
g modifier: global. All matches (don't return after first match)
m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)
Your regular expression does not match the subject string.

Regular Expression
No Match

r"
"
gm

Test String