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1¡¢re¶ÔÏóµÄ·½·¨
match    Match a regular expression pattern to the beginning of a string.
search   re.search(pattern, string, flags) flags:re.I re.M re.X re.S re.L re.U
sub      Substitute occurrences of a pattern found in a string.
subn     Same as sub, but also return the number of substitutions made.
split    Split a string by the occurrences of a pattern.
findall  Find all occurrences of a pattern in a string.
finditer Return an iterator yielding a match object for each match.
iter = re.finditer("23", "123423523")
for i in iter:
print i.span() 
compile  ½«Ò»¸öpattern±àÒë³ÉÒ»¸öRegexObject.
       re¶ÔÏóµÄʹÓ÷½·¨£¬reobject = re.complie(pattern)£¬´Óreobject»ñµÃpatternµÄ·½·¨£¬Ê¹ÓÃreobject.patternÊôÐÔ
       Èç¹ûÒ»¸öreobjectÒª¶à´ÎʹÓã¬×îºÃʹÓÃcompile·½·¨Ìá¸ßÐÔÄÜ£¬·ñÔò¿ÉÒÔÖ±½Ó°´ÕâÖÖ·½Ê½Ê¹Óã¬re.search(pattern, string)
purge    Clear the regular expression cache.
escape   Backslash all non-alphanumerics in a string.
2¡¢ÒªÊ¹group(s)·½·¨£¬Ó¦¸ÃÔÚpatternÖжÔÏëÒªÔÚtuplesÖеIJ¿·Ö¼ÓÉÏÀ¨ºÅ£¬ÀýÈç“123-45”£¬ÏëÆ¥ÅäÕâ¸östring£¬µ«ÊÇÖ»Ïë»ñµÃÇ°Èý¸öÊý×Ö£¬Ôò¿ÉÒÔʹÓÃÕâÑùµÄpattern,"(\d{3})-\d{2}"
,×¢ÒâÇ°ÃæʹÓÃÁËÀ¨ºÅ£¬ÔÙµ÷ÓÃgroups·½·¨»áµÃµ½tuples,("123",)
¡£group(s)ÊÇSRE_Match object µÄ·½·¨£¬Í¨³£Ê¹Ó÷½·¨Îªreobject.search(string).group(s)
3¡¢ÒªÆ¥ÅäÈÎÒâµ¥¸ö×Ö·ûʹÓÃ"."£¬ÈÎÒâ¸ö×Ö·ûʹÓÃ".*"(°üÀ¨0¸ö)£¬»òÕß".+"(ÖÁÉÙÒ»¸ö)¡£
4¡¢À¨ºÅµÄ¶àÖÖÓ÷¨
    (?:)²»·ÅÈëgroupsÖÐ
    (?iLmsux) Ϊpattern¼ÓÈëI,L,M,S,U,X±êÖ¾
    (?P<name>) ΪgroupµÄÒ»Ïî¼ÓÈë±ðÃû
    (?P=name) Æ¥ÅäÔÚ֮ǰÓÃname±íʾµÄ²¿·Ö±í´ïʽËùÆ¥Åäµ½µÄÄÚÈÝ
    (?#comment) ×¢ÊÍ
    test1(?=test2)  Èç¹ûtest1ºóÃæ¸ú×Åte


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e.g.1
# 030
aFile = file(r'C:\temp.txt', 'a')
aFile.write('ÓÖÌí¼ÓÁËÒ»ÐС£')
aFile.close()

output:
e.g.2
# 030
aFile = file(r'C:\temp.txt', 'a')
aFile.write('ÓÖÌí¼ÓÁËÒ»ÐС£')
aFile.close()

output:
e.g.3
ʵÏÖ¸ù¾ÝԭʼÎļþÓÐûÓÐ×îºóÒ»ÐпÕÐеÄÇé¿öÀ´½øÐÐ&ldqu ......

PythonÈëÃŵÄ36¸öÀý×Ó Ö® 29

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# 033
class Person:
age = 22
def sayHello(self): # ·½·¨Ó뺯ÊýµÄÇø±ðÔÚÓÚÐèÒªÒ»¸öself²ÎÊý
print 'Hello!'
# end of def
# end of class # ÕâÊÇÎÒÁ¼ºÃµÄ±à³Ì·ç¸ñ
p = Person()
print p.age
p.sayHello()

output£º
22
Hello! ......

Python Raw SocketʹÓÃʾÀý(·¢ËÍTCP SYNÊý¾Ý°ü)

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import sys
import time
import socket
import struct
import random
def SendPacketData (Buffer = None , DestIP = "127.0.0.1" , DestPort = 0 ......

python±È½Ï²Ù×÷µÄÄÚÄ»

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ÔÚpythonºËÐıà³Ì(2nd)Ò»ÊéÖÐ6.13.1Õ½ÚÖÐ, ¸ø³öÁËÁбí±È½ÏµÄÒ»¸ö×¼Ôò..
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ÎÒÓõÄÊÇpython2.6....
¶ÔÕâ¸öÎÊÌâ×öÁËһЩ²âÊÔ, ×Ô¼ºÄ¿Ç°¸Â¾øµ±±È½ÏÓöµ½ÉÏÊöÇé¿öʱ, ÊÇʹÓÃÁ½¸öÁбíµÄÄÚ´æµØÖ·ÖµÀ´±È½ ......

Python ¶þ½øÖÆÎļþ¶ÁÈ¡ÏÔʾ

filename=raw_input('enter file name:')
f=open(filename,'rb')
f.seek(0,0)
index=0
for i in range(0,16):
print "%3s" % hex(i) ,
print
for i in range(0,16):
print "%-3s" % "#" ,
print
while True:
temp=f.read(1)
if len(temp) == 0:
break
else:
print "%3s" % temp.encode('hex'),
......
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