Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

ÇóÖúpython£¬map filter

map£¬filter·½·¨Ó¦¸Ã»á·µ»ØÒ»¸öÁÐ±í¡£
µ«ÊÇÔÚÎÒÕâÀËüÃÇ×ÜÊÇ·µ»Ø£º
<map object at 0x0000000002A2C978>
<filter object at 0x0000000002A2C9E8>

ÎÒÓõÄpython3.1£¬ Õâ¸öÒ²Êǰ汾µÄ±ä¶¯µ¼ÖµÄÂð£¿

def map_func(lis):
  return lis + 1
li = [1,2,3,4,5]
map_l = map(map_func, li) #½«liÖÐËùÓеÄÊý¶¼+1
print (map_l)

¾ÍÊÇÕâ¸öС³ÌÐò£¬Ôõô¼Óprint£¿

¿´¿´Õâ¸ö
What's New In Python 3.0 http://blog.csdn.net/t_huanghai/archive/2008/12/04/3443782.aspx
ÀïÃæÓжÔpython3.0 map£¨£©º¯Êý½éÉÜ£¬²Î¿¼Ï £¬ÊÔÊÔ print list(map_l)

map() and filter() return iterators. If you really need a list, a quick fix is e.g. list(map(...)), but a better fix is often to use a list comprehension (especially when the original code uses lambda), or rewriting the code so it doesn¡¯t need a list at all. Particularly tricky is map() invoked for the side effects of the function; the correct transformation is to use a regular for loop (since creating a list would just be wasteful). 


What's New In Python 3.0

invalid syntax
¿´À´£¬Ó¦¸ÃÕÕËü˵µÄ£¬ ÓÃfor loop


ллС¿µ

print (list£¨map_l£©)

correct format. mark it.


Ïà¹ØÎÊ´ð£º

IIS 7 python 2.6 cgi ÎļþÉÏ´«ÎÊÌâ

ÎÒÿ´ÎÉÏ´«µÄÎļþ¶Áµ½µÄÊý¾Ý¶¼²»ÕýÈ·¡£2M µÄͼƬ¶ÁµÃ10¶àK ¡£¡£ÄÄλ´óÏÀ¿ÉÒÔ°ï°ïÎÒ°¡¡£
#!D:\ProgrammerTools\python26\python.exe
#encoding=utf-8
import cgitb
import os
cgitb.enable()
import cgi,urllib ......

³ÏÕÐPython³ÌÐòÔ±²ÎÓë¼ÆËã»úÊé¼®³ö°æ

ÓźñµÄ¸å³ê£¬³ÏÕÐPython¼¼ÊõÈËÔ±²ÎÓë¸÷ÖÖ¼¼ÊõÊé¼®³ö°æ¡£ 
ͨ¹ý¸ÃÊé¼®£¬×÷Õß¿ÉÒԵõ½Èçϱ¨³ê£º 
1¡¢·áºñµÄ¸å³ê¡£ 
2¡¢Êé¼®Öø×÷µÄÊðÃûȨ¡£ 
3¡¢¶Ô×÷ÕߺÍÊé½øÐÐÐû´«£¬Ìá¸ß×÷ÕßÔÚ¼¼ÊõȦ×ÓÀ ......

python ÕýÔòÆ¥ÅäÖÐÎÄ

ÔÚÎı¾ÎļþÖÐÆ¥ÅäÏî°üº¬ÖÐÎÄ
ÈçÄÚÈÝΪ£ºgamename=ÖÐÎÄ 
  key=ÌìÏÂ
Îı¾ÎļþµÄ±àÂëµÄÎļþΪutf-8
python´úÂëÈçÏ£º
# -*- coding:UTF-8 -*-
  contents=open(from_pa ......

python ͼÏñ¶à±ßÐÎÇиî

pythonµÄPIL¿â×Ô´øµÄ·½·¨Ö»ÄܽøÐоØÐεÄÇиÈç¹ûÎÒÓÐÁËÒ»¸ö¶à±ßÐθ÷¸ö¶¥µãµÄ×ø±ê£¬ÈçºÎ¶ÔÏÖÓеÄͼƬ°´ÕÕÕâ¸ö¶à±ßÐνøÐÐÇиîÄØ£¿
²»Ò»¶¨ÒªÓÃPIL¿â£¬ÈκÎÄÜʵÏÖÕâ¸ö¹¦Äܵķ½·¨¶¼ÐС£

ͼƬÇиîµÄjs²»ÊǺܶàÂð£¿
......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ