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1.open
ʹÓÃopen´ò¿ªÎļþºóÒ»¶¨Òª¼ÇµÃµ÷ÓÃÎļþ¶ÔÏóµÄclose()·½·¨¡£±ÈÈç¿ÉÒÔÓÃtry/finallyÓï¾äÀ´È·±£×îºóÄܹرÕÎļþ¡£
file_object = open('thefile.txt')
try:
     all_the_text = file_object.read( )
finally:
     file_object.close( )
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2.¶ÁÎļþ
¶ÁÎı¾Îļþ
input = open('data', 'r')
#µÚ¶þ¸ö²ÎÊýĬÈÏΪr
input = open('data')
 
¶Á¶þ½øÖÆÎļþ
input = open('data', 'rb')
 
¶ÁÈ¡ËùÓÐÄÚÈÝ
file_object = open('thefile.txt')
try:
     all_the_text = file_object.read( )
finally:
     file_object.close( )
 
¶Á¹Ì¶¨×Ö½Ú
file_object = open('abinfile', 'rb')
try:
    while True:
         chunk = file_object.read(100)
        if not chunk:
            break
         do_something_with(chunk)
finally:
     file_object.close( )
 
¶ÁÿÐÐ
list_of_all_the_lines = file_object.readlines( )
Èç¹ûÎļþÊÇÎı¾Îļþ£¬»¹¿ÉÒÔÖ±½Ó±éÀúÎļþ¶ÔÏó»ñȡÿÐУº
for line in file_object:
     process line
 
3.дÎļþ
дÎı¾Îļþ
output = open('data', 'w')
 
д¶þ½øÖÆÎļþ
output = open('data', 'wb')
 
×·¼ÓдÎļþ
output = open('data', 'w+')
 
дÊý¾Ý
file_object = open('thefile.txt', 'w')
file_object.write(all_the_text)
file_object.close( )
 
дÈë¶àÐÐ
file_object.writelines(list_of_text_strings)
×¢Ò⣬µ÷ÓÃwritelinesдÈë¶àÐÐÔÚÐÔÄÜÉÏ»á±ÈʹÓÃwriteÒ»´ÎÐÔдÈëÒª¸ß¡£
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python challenge

from: http://www.cnblogs.com/jimnox/archive/2009/12/08/tips-to-python-challenge.html
Python ChallengeÊÇÒ»¸öÍøÒ³´³¹ØÓÎÏ·£¬Í¨¹ýһЩÌáʾÕÒ³öÏÂÒ»¹ØµÄÍøÒ³µØÖ·¡£ÓëÖÚ²»Í¬µÄÊÇ£¬ËüÊÇרÃÅΪ³ÌÐòÔ±Éè¼ÆµÄ£¬ÒòΪ´ó¶àÊý¹Ø¿¨¶¼Òª±à³ÌÀ´ËãŶ£¡£¡
È¥ÄêºÍͬѧһÆðÍæµÄ£¬Ëû×öÁË´ó°ë£¬ÎÒ×öÁËС°ë£¬×÷±×ÁËһЩ£¬33¹ØÈ«Í¨£¬½ ......

pythonµÄ±àÂëÎÊÌâ

  Ç°Á½ÌìÀí½âÁËunicode¡¢utf-8¡¢gb2312ÕâЩ±àÂëÖ®¼äµÄ¹ØÏµÒԺ󣬽ñÌìÖÕÓÚŪÃ÷°×ÁËÔÚpythonÀïÃæµÄ±àÂëÎÊÌâ¡£ÎÒÃÇÔÚдpython½Å±¾Ê±Èç¹ûÓÐÖÐÎĵÄ×Ö·û´®£¬ÔÚÔËÐеÄʱºòÓпÉÄܻᱨ´íÒ²ÓпÉÄÜ»á³öÏÖÂÒÂë¡£Ò»°ã¼ÓÉÏ# -*- coding:utf-8 -*-¾Í²»»á±¨´íÁË£¬µ«ÊÇ»¹¿ÉÄÜÓÐÂÒÂëÎÊÌ⣬¶øÇÒͬÑùµÄ´úÂëÔÚ²»Í¬µÄ±à¼­Æ÷ÖеóöµÄ½á¹û ......

Python Socket±à³Ì

1£¬±àдServer.py
import socket
s=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
s.bind(('localhost',8081))
while True:
    data,addr=s.recvfrom(1024)
    print 'receive:',data,'from',addr
2£¬±àдClient.py
import socket
s=socket.socket(socket.AF_INET,socket.SOC ......

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*args
ºÍ**dargs²¢ÓÃʱ£¬*args±ØÐë·ÅÔÚ**dargsµÄÇ°Ãæ¡£
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def func(a,b, *c):
    pass
º¯ÊýfuncÖÁÉÙÓÐÁ½¸ö²ÎÊý±ä²ÎÊý·ÅÔÚtuple  cÖÐ
def func(*c): »òÕß def  func(**d ......

»ù±¾Êý¾Ý½á¹¹µÄpythonʵÏÖ ¶ÓÁÐ

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Óë¶ÑÕ»ÀàËÆ£¬Í¨¹ýpythonµÄÁбíÀàÐÍÀ´ÊµÏÖ£¬²Î¿¼ help(list)
shoplist=['apple','mango','carrot','banana']
print 'I have',len(shoplist),'items to purchase'
print 'these items are:'
for item in shoplist:
print item,
shoplist.append('rice')
print 'my shopping list is now', shoplist
shoplist. ......
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