Regular Expressions 101

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"
abc*
"
g
ab
matches the characters ab literally (case sensitive)
c
matches the character c with index 9910 (6316 or 1438) literally (case sensitive)
Global pattern flags
g modifier: global. All matches (don't return after first match)
Your regular expression does not match the subject string.

Regular Expression
No Match

r"
"
g

Test String