Python中正则表达式的用法实例汇总(2)

(Use regex object to get the part of a string matched by a capturing group)

reobj = re.compile(regex)
match = reobj.search(subject)
if match:
  result = match.group(1)
else:
  result = ""

(Use regex object to get the part of a string matched by a named group)

reobj = re.compile(regex)
match = reobj.search(subject)
if match:
  result = match.group("groupname")
else:
  result = ""

(Use regex object to get an array of all regex matches in a string)

reobj = re.compile(regex)
result = reobj.findall(subject)

(Use regex object to iterate over all matches in a string)

reobj = re.compile(regex)
for match in reobj.finditer(subject):
  # match start: match.start()
  # match end (exclusive): match.end()
  # matched text: match.group()