Regular Expressions 101

Group user(?P<user>.*?)

.*?any Unicode character (except for line terminators), repeated any number of times

\s*a Unicode whitespace character, repeated any number of times

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Group hhmm(?P<hhmm>(?:\d|[01]\d|2[0-3]):[0-5]\d)

Non-Capturing Group(?:\d|[01]\d|2[0-3])

1st Alternative\d

\da Unicode decimal digit

2nd Alternative[01]\d

Character Class[01]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

\da Unicode decimal digit

3rd Alternative2[0-3]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0-3]

0-3one character from 0 (48₁₀) to 3 (51₁₀)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Character Class[0-5]

0-5one character from 0 (48₁₀) to 5 (53₁₀)

\da Unicode decimal digit

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?P<user>.*?)\s*\((?P<hhmm>(?:\d|[01]\d|2[0-3]):[0-5]\d)\)

Test String
New

Peter (08:16): 
Hi 
What's up? 
;-D

Anji Juo (09:13): 
Hey, I'm using WhatsApp!

Peter (11:17):
Could you please tell me where is the feedback?

Anji Juo (19:13): 
I don't know where it is. 

Anji Juo (19:14): 
Do you by any chance know where I can catch a taxi ?
🙏🙏🙏

Regular Expression

Test StringNew

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Test String
New

Extraction
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