regex101: Python Match Workspace

Comment: brief

^start of line

Non-Capturing Group(?:\s*(\d+:)\s*)?

?repeats the group contents below at most once:

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

Group 1(\d+:)

\d+a Unicode decimal digit, repeated at least once

:the literal : (58₁₀ / 72₈ / 3A₁₆)

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

Group 2([VDIWEF])

Character Class[VDIWEF]

Vthe literal V (86₁₀ / 126₈ / 56₁₆) (case sensitive)

Dthe literal D (68₁₀ / 104₈ / 44₁₆) (case sensitive)

Ithe literal I (73₁₀ / 111₈ / 49₁₆) (case sensitive)

Wthe literal W (87₁₀ / 127₈ / 57₁₆) (case sensitive)

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

Fthe literal F (70₁₀ / 106₈ / 46₁₆) (case sensitive)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

Group 3(.*?)

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

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

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

Group 4(\d+)

\d+a Unicode decimal digit, repeated at least once

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\s+a Unicode whitespace character, repeated at least once

Group 5(.*)

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

$end of line

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

x modifier: extended. Ignores unescaped whitespace and comments outside character classes

Search reference

Regular Expression

# brief
^
            (?:\s*(\d+:)\s*)?
            ([VDIWEF])/(.*?)
            \(\s*(\d+)\):\s+
            (.*)
$

Test String
New

 1: I/Vold    ( 2311): Vold 2.1 (the revenge) firing up
12:D/Vold    ( 2311): Volume loop state changing -1 (Initializing) -> 0 (No-Media)
W/Vold    ( 2311): addMdmDev don't find a match usb device(1d6b_2) in isKnownMdmDev
W/Vold    ( 2311): addMdmDev don't find a match usb device(1d57_ad03) in isKnownMdmDev
I/SystemServer( 3424): Connectivity Service
D/ConnectivityService( 3424): ConnectivityService starting up
V/ConnectivityService( 3424): mNetworkPreference9
D/ConnectivityService( 3424): *******netType=wifi,1,1,1,-1,true
I/ConnectivityService( 3424): NetworkAttributes naString: wifi,1,1,1,-1,true  type: 1
D/ConnectivityService( 3424): *******netType=mobile,0,0,0,-1,true
I/ConnectivityService( 3424): NetworkAttributes naString: mobile,0,0,0,-1,true  type: 0
D/ConnectivityService( 3424): *******netType=mobile_bluetooth,7,7,1,-1,true
I/ConnectivityService( 3424): NetworkAttributes naString: mobile_bluetooth,7,7,1,-1,true  type: 7
D/ConnectivityService( 3424): *******netType=wifi_p2p,13,1,0,-1,true
I/ConnectivityService( 3424): NetworkAttributes naString: wifi_p2p,13,1,0,-1,true  type: 13
D/ConnectivityService( 3424): *******netType=ethernet,9,9,1,-1,true
I/ConnectivityService( 3424): NetworkAttributes naString: ethernet,9,9,1,-1,true  type: 9
E/ConnectivityService( 3424): Ignoring protectedNetwork 10
E/ConnectivityService( 3424): Ignoring protectedNetwork 11
E/ConnectivityService( 3424): Ignoring protectedNetwork 12

Regular Expression

Test StringNew

Test String
New