Reguläre Ausdrücke kurz & gut, 2nd Edition

Beispiele

#Suche nach Spider-Man, Spiderman, SPIDER-MAN usw.
import re

dailybugle = 'Spider-Man Menaces City!'
pattern    = r'spider[- ]?man.'

if re.match(pattern, dailybugle, re.IGNORECASE):
    print dailybugle

Listing 1.17 Einfaches Matching

#Datumsangaben in Formaten wie MM/DD/YYYY,
# MM-DD-YY ... erkennen
import re

date = '12/30/1969'

regex = re.compile(r'^(\d\d)[-/](\d\d)[-/](\d\d(?:\d\d)?)$')

match = regex.match(date)

if match:
    monat = match.group(1) #12
    tag   = match.group(2) #30
    jahr  = match.group(3) #1969

Listing 1.18 Matching- und Capture-Gruppe

#<br> XHTML-konform in <br /> umwandeln
import re

text  = 'Hallo Welt! <br>'
regex = re.compile(r'<br>', re.IGNORECASE);
repl  = r'<br />'

result = regex.sub(repl,text)

Listing 1.19 Einfache Substitution

#urlify ...