if    ($statement =~ /I love (w+)/) {
  print "He loves $1n";
}
elsif ($statement =~ /Ich liebe (w+)/) {
  print "Er liebt $1n";
}
elsif ($statement =~ /Je t'aime (w+)/) {
  print "Il aime $1n";
}

m = re.search("I love (w+)", statement)
if m:
  print "He loves",m.group(1)
else:
  m = re.search("Ich liebe (w+)", statement)
  if m:
    print "Er liebt",m.group(1)
  else:
    m = re.search("Je t'aime (w+)", statement)
    if m:
      print "Il aime",m.group(1)

import re

class REMatcher(object):
    def __init__(self, matchstring):
        self.matchstring = matchstring

    def match(self,regexp):
        self.rematch = re.match(regexp, self.matchstring)
        return bool(self.rematch)

    def group(self,i):
        return self.rematch.group(i)


for statement in ("I love Mary",
                  "Ich liebe Margot",
                  "Je t'aime Marie",
                  "Te amo Maria"):

    m = REMatcher(statement)

    if m.match(r"I love (w+)"):
        print "He loves",m.group(1)

    elif m.match(r"Ich liebe (w+)"):
        print "Er liebt",m.group(1)

    elif m.match(r"Je t'aime (w+)"):
        print "Il aime",m.group(1)

    else:
        print "???"

m0 = re.match("I love (w+)", statement)
m1 = re.match("Ich liebe (w+)", statement)
m2 = re.match("Je t'aime (w+)", statement)
if m0:
  print "He loves",m0.group(1)
elif m1:
  print "Er liebt",m1.group(1)
elif m2:
  print "Il aime",m2.group(1)

pats = [
    ("I love (w+)", "He Loves {0}" ),
    ("Ich liebe (w+)", "Er Liebe {0}" ),
    ("Je t'aime (w+)", "Il aime {0}")
 ]
for p1, p3 in pats:
    m= re.match( p1, statement )
    if m:
        print p3.format( m.group(1) )
        break

pats = {
    "I love (w+)" : "He Loves {0}",
    "Ich liebe (w+)" : "Er Liebe {0}",
    "Je t'aime (w+)" : "Il aime {0}",
}
for p1 in pats:
    m= re.match( p1, statement )
    if m:
        print pats[p1].format( m.group(1) )
        break

alist={"I love ":""He loves"","Je t'aime ":"Il aime","Ich liebe ":"Er liebt"}
for k in alist.keys():
    if k in statement:
       print alist[k],statement.split(k)[1:]

def re_match_group(pattern, str, out_groups):
    del out_groups[:]
    result = re.match(pattern, str)
    if result:
        out_groups[:len(result.groups())] = result.groups()
    return result

groups = []
if re_match_group("I love (w+)", statement, groups):
    print "He loves", groups[0]
elif re_match_group("Ich liebe (w+)", statement, groups):
    print "Er liebt", groups[0]
elif re_match_group("Je t'aime (w+)", statement, groups):
    print "Il aime", groups[0]