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1.²âÊÔÕýÔò±í´ïʽÊÇ·ñÆ¥Åä×Ö·û´®µÄÈ«²¿»ò²¿·Ö
regex=ur"" #ÕýÔò±í´ïʽ
if re.search(regex, subject):
    do_something()
else:
    do_anotherthing()
2.²âÊÔÕýÔò±í´ïʽÊÇ·ñÆ¥ÅäÕû¸ö×Ö·û´®
regex=ur"\Z" #ÕýÔò±í´ïʽĩβÒÔ\Z½áÊø
if re.match(regex, subject):
    do_something()
else:
    do_anotherthing()
3.´´½¨Ò»¸öÆ¥Åä¶ÔÏó£¬È»ºóͨ¹ý¸Ã¶ÔÏó»ñµÃÆ¥Åäϸ½Ú(Create an object with details about how the regex matches (part of) a string)
regex=ur"" #ÕýÔò±í´ïʽ
match = re.search(regex, subject)
if match:
    # match start: match.start()
    # match end (exclusive): atch.end()
    # matched text: match.group()
    do_something()
else:
    do_anotherthing()
4.»ñÈ¡ÕýÔò±í´ïʽËùÆ¥ÅäµÄ×Ó´®(Get the part of a string matched by the regex)
regex=ur"" #ÕýÔò±í´ïʽ
match = re.search(regex, subject)
if match:
    result = match.group()
else:
    result = ""
5. »ñÈ¡²¶»ñ×éËùÆ¥ÅäµÄ×Ó´®(Get the part of a string matched by a capturing group)
regex=ur"" #ÕýÔò±í´ïʽ
match = re.search(regex, subject)
if match:
    result = match.group(1)
else:
    result = ""
6. »ñÈ¡ÓÐÃû×éËùÆ¥ÅäµÄ×Ó´®(Get the part of a string matched by a named group)
regex=ur"" #ÕýÔò±í´ïʽ
match = re.search(regex, subject)
if match:
    result = match.group"groupname")
else:
    result = ""
7. ½«×Ö·û´®ÖÐËùÓÐÆ¥ÅäµÄ×Ó´®·ÅÈëÊý×éÖÐ(Get an array of all regex matches in a string)
result = re.findall(regex, subject)
8.±éÀúËùÓÐÆ¥ÅäµÄ×Ó´®(Iterate over all matches in a string)
for match in re.finditer(r"<(.*?)\s*.*?/\1