regex101: Python Match Workspace

^start of line

Character Class[LNSE]

Lthe literal L (76₁₀ / 114₈ / 4C₁₆) (case sensitive)

Nthe literal N (78₁₀ / 116₈ / 4E₁₆) (case sensitive)

Sthe literal S (83₁₀ / 123₈ / 53₁₆) (case sensitive)

Ethe literal E (69₁₀ / 105₈ / 45₁₆) (case sensitive)

the literal (32₁₀ / 40₈ / 20₁₆)

Group 1(.*(?:\n(?![LNSE] ).*)?)

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

Non-Capturing Group(?:\n(?![LNSE] ).*)?

?repeats the group contents below at most once:

\na line-feed (newline) character (ASCII 10)

Negative Lookahead(?![LNSE] )

Character Class[LNSE]

Lthe literal L (76₁₀ / 114₈ / 4C₁₆) (case sensitive)

Nthe literal N (78₁₀ / 116₈ / 4E₁₆) (case sensitive)

Sthe literal S (83₁₀ / 123₈ / 53₁₆) (case sensitive)

Ethe literal E (69₁₀ / 105₈ / 45₁₆) (case sensitive)

the literal (32₁₀ / 40₈ / 20₁₆)

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

Global pattern flags

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

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Search reference

Regular Expression

^[LNSE] (.*(?:\n(?![LNSE] ).*)?)

New

L 065 00 24329   12313   244.0.15.55 252.9.11.90 02/25 08:05 00:00:44 0000 0000 
                                                                
N 066 00 23442   T000185 262.1.00.09 02/25 08:05 00:00:02 A 16630
&       0000    0000                                      
S 067 00 00984   T000134             02/25 08:06 00:00:02 A 61445
&       0000    0000                                      
S 068 00 T000002 29536               02/25 08:05 00:00:36 
&       0000    0000   1234567890XXXXXX                   
E 069 00 T000002 T000185             02/25 08:06 00:00:00 
&       0000    0000   1234567890XXXXXX
L 065 00 24329   12313   244.0.15.55 252.9.11.90 02/25 08:05 00:00:44 0000 0000

Regular Expressions 101

Regular Expression

Extraction