Regular Expressions 101

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"
(^.+endpoint database needs to be configured on server.+\n^.+)#(.+)
"
gm
1st Capturing Group
(^.+endpoint database needs to be configured on server.+\n^.+)
^ asserts position at start of a line
.
matches any character (except for line terminators)
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
endpoint database needs to be configured on server
matches the characters endpoint database needs to be configured on server literally (case sensitive)
.
matches any character (except for line terminators)
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
\n matches a line-feed (newline) character (ASCII 10)
^ asserts position at start of a line
.
matches any character (except for line terminators)
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
# matches the character # with index 3510 (2316 or 438) literally (case sensitive)
2nd Capturing Group
(.+)
.
matches any character (except for line terminators)
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
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

Substitution

Processing...