regex101: Python Match Workspace

Negative Lookbehind(?<!\S)

\Sany character that is not Unicode whitespace

Non-Capturing Group(?:https?://)?

?repeats the group contents below at most once:

httpthe literal text http (case sensitive)

s?optionally matches the literal s (115₁₀ / 163₈ / 73₁₆) (case sensitive)

://the literal text ://

Non-Capturing Group(?:www\.)?

?repeats the group contents below at most once:

wwwthe literal text www (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

googlethe literal text google (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\S*any character that is not Unicode whitespace, repeated any number of times

Global pattern flags

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

25 tokens

Regular Expression

(?<!\S)(?:https?://)?(?:www\.)?google\.\S*

New

bla bla google.com bla bla", #0
bla bla www.google.com bla bla", #1
bla bla api.google.com bla bla", #2
google.com", #3
www.google.com", #4
api.google.com", #5
http://google.com", #6
http://www.google.com", #7
http://api.google.com", #8
bla bla http://www.google.com bla bla", #9
bla bla https://www.api.google.com bla bla", #10
bla bla https://www.map.google.com bla bla" #11

Extraction

bla bla google.com bla bla", #0
bla bla www.google.com bla bla", #1
bla bla api.google.com bla bla", #2
google.com", #3
www.google.com", #4
api.google.com", #5
http://google.com", #6
http://www.google.com", #7
http://api.google.com", #8
bla bla http://www.google.com bla bla", #9
bla bla https://www.api.google.com bla bla", #10
bla bla https://www.map.google.com bla bla" #11