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

python Ä£¿éµÄ__name__ __main__

ÿ¸öÄ£¿é¶¼ÓÐÒ»¸öÃû³Æ£¬ÔÚÄ£¿éÖпÉÒÔͨ¹ýÓï¾äÀ´ÕÒ³öÄ£¿éµÄÃû³Æ¡£ÕâÔÚÒ»¸ö³¡ºÏÌØ±ðÓÐÓÃ
——¾ÍÈçÇ°ÃæËùÌáµ½µÄ£¬µ±Ò»¸öÄ£¿é±»µÚÒ»´ÎÊäÈëµÄʱºò£¬Õâ¸öÄ£¿éµÄÖ÷¿é½«±»ÔËÐС£
ÿ¸öPythonÄ£¿é¶¼ÓÐËüµÄ__name__£¬Èç¹ûËüÊÇ'__main__'£¬Õâ˵Ã÷Õâ¸öÄ£¿é±»Óû§µ¥¶ÀÔËÐУ¬
ÎÒÃÇ¿ÉÒÔ½øÐÐÏàÓ¦µÄÇ¡µ±²Ù×÷¡£
#!/usr/bin/python
# Filename: using_name.py
if __name__ == '__main__':
     print 'This program is being run by itself'
else:
     print 'I am being imported from another module'
Êä³ö
$ python using_name.py
This program is being run by itself
$ python
>>> import using_name
I am being imported from another module


Ïà¹ØÎĵµ£º

python ÃüÁîÐвÎÊý


±¾Æª½«½éÉÜpythonÖÐsys, getoptÄ£¿é´¦ÀíÃüÁîÐвÎÊý
Èç¹ûÏë¶Ôpython½Å±¾´«²ÎÊý£¬pythonÖжÔÓ¦µÄargc, argv(cÓïÑÔµÄÃüÁîÐвÎÊý)ÊÇÊ²Ã´ÄØ£¿
ÐèҪģ¿é£ºsys
²ÎÊý¸öÊý£ºlen(sys.argv)
½Å±¾Ãû£º    sys.argv[0]
²ÎÊý1£º     sys.argv[1]
²ÎÊý2£º     sys.argv[2]
test.py
1
import ......

ÔÚpythonÖд¦ÀíXML×ܽá

±¾ÎÄ×ܽáÁËÔÚPythonÖÐÖ÷ÒªµÄ¼¸ÖÖ´¦ÀíXMLµÄ·½·¨£º
Element Tree
SAX
Dom
ʹÓõÚÈý·½Àà¿âÈçAmara 2.x£¬ libxml2dom µÈ
Element Tree
Element TreeÊÇPython 2.5ÒýÈëµÄʹÓüòµ¥£¬¿ì½ÝµÄ´¦Àí·½·¨£¬ Ò²ÊÇPython±ê×¼Àà¿âÍÆ¼öµÄ´¦ÀíXMLµÄ·½·¨¡£
ËüʹÓÃÊ÷ÐνڵãµÄÐÎʽÀ´¶ÁдXML¡£Element TreeÊÇÇáÁ¿¼¶µÄDOM£¬ ËùÒÔÊ ......

PythonÖо²Ì¬·½·¨µÄʵÏÖ

×÷ÕߣºÀÏÍõ
PythonËÆºõºÜÌÖÑáÐÞÊηû£¬Ã»Óг£¼ûµÄstaticÓï·¨¡£Æä¾²Ì¬·½·¨µÄʵÏÖ´óÖÂÓÐÒÔÏÂÁ½ÖÖ·½·¨£º
µÚÒ»ÖÖ·½Ê½£¨staticmethod£©£º
>>> class Foo:
        str = "I'm a static method."
        def ba ......

ʹÓÃpdbµ÷ÊÔPython³ÌÐò

ʹÓÃpdbµ÷ÊÔPython³ÌÐò
 
±¾ÎÄÌÖÂÛÔÚûÓз½±ãµÄIDE¹¤¾ß¿ÉÓõÄÇé¿öÏ£¬Ê¹ÓÃpdbµ÷ÊÔpython³ÌÐò
 
Ô´ÂëÀý×Ó
ÀýÈ磬ÓÐÄ£Äâ˰ÊÕ¼ÆËãµÄ³ÌÐò£º
 
#!/usr/bin/python
def debug_demo(val):
                if val &l ......

python udp c/s ¼Ç¼

server:
import sys
import socket
host = sys.argv[1]
port = int(sys.argv[2])
 
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
 
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
 
s.bind((host,port))
 
while 1:
    try:
   &n ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ