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 ×îÐÂÎÄÕ : Python

Python֮ȫ¾Ö±äÁ¿

Ó¦¸Ã¾¡Á¿±ÜÃâʹÓÃÈ«¾Ö±äÁ¿¡£²»Í¬µÄÄ£¿é¶¼¿ÉÒÔ×ÔÓɵķÃÎÊÈ«¾Ö±äÁ¿£¬¿ÉÄܻᵼÖÂÈ«¾Ö±äÁ¿µÄ²»¿ÉÔ¤ÖªÐÔ¡£¶ÔÈ«¾Ö±äÁ¿£¬Èç¹û³ÌÐòÔ±¼×ÐÞ¸ÄÁË_aµÄÖµ£¬³ÌÐòÔ±ÒÒͬʱҲҪʹÓÃ_a£¬Õâʱ¿ÉÄܵ¼Ö³ÌÐòÖеĴíÎó¡£ÕâÖÖ´íÎóÊǺÜÄÑ·¢Ïֺ͸üÕýµÄ¡£ 
È«¾Ö±äÁ¿½µµÍÁ˺¯Êý»òÄ£¿éÖ®¼äµÄͨÓÃÐÔ£¬²»Í¬µÄº¯Êý»òÄ£¿é¶¼ÒªÒÀÀµÓÚÈ«¾Ö±äÁ¿¡£Í¬Ñù£¬È«¾Ö±äÁ¿½µµÍÁË´úÂëµÄ¿É¶ÁÐÔ£¬ÔĶÁÕß¿ÉÄܲ¢²»ÖªµÀµ÷ÓõÄij¸ö±äÁ¿ÊÇÈ«¾Ö±äÁ¿¡£
µ«ÊÇijЩʱºò£¬È«¾Ö±äÁ¿Äܹ»½â¾ö¾Ö²¿±äÁ¿ËùÄÑÒÔ½â¾öµÄÎÊÌâ¡£ÊÂÎïÒªÒ»·ÖΪ¶þ¡£
pythonÀïÃæÈ«¾Ö±äÁ¿ÓÐÁ½ÖÖÁé»îµÄÓ÷¨£º
1 ÉùÃ÷·¨
ÔÚÎļþ¿ªÍ·ÉùÃ÷È«¾Ö±äÁ¿variable£¬
ÔÚ¾ßÌ庯ÊýÖÐʹÓøñäÁ¿Ê±£¬ÐèÒªÊÂÏÈÉùÃ÷ global variable£¬·ñÔòϵͳ½«¸Ã±äÁ¿ÊÓΪ¾Ö²¿±äÁ¿¡£
CONSTANT = 0 
(½«È«¾Ö±äÁ¿´óд±ãÓÚʶ±ð)
def modifyConstant() :
        global CONSTANT
        print CONSTANT
        CONSTANT += 1
        return
if __name__ == '__main__' :
        modifyConstant ......

ÍøվģÄâµÇ½±¸Íü£¨php + python£©

 php°æ£º
<?php
$cookie_file = fopen('cookie.txt','w');//dirname(__FILE__)."/cookie_".md5(basename(__FILE__)).".txt"; // ÉèÖÃCookieÎļþ±£´æ·¾¶¼°ÎļþÃû

function vlogin($url,$data){ // Ä£ÄâµÇ¼»ñÈ¡Cookieº¯Êý
$curl = curl_init(); // Æô¶¯Ò»¸öCURL»á»°
curl_setopt($curl, CURLOPT_URL, $url); // Òª·ÃÎʵĵØÖ·
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); // ¶ÔÈÏÖ¤Ö¤ÊéÀ´Ô´µÄ¼ì²é
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 1); // ´ÓÖ¤ÊéÖмì²éSSL¼ÓÃÜËã·¨ÊÇ·ñ´æÔÚ
curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']); // Ä£ÄâÓû§Ê¹ÓõÄä¯ÀÀÆ÷
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1); // ʹÓÃ×Ô¶¯Ìøת
curl_setopt($curl, CURLOPT_AUTOREFERER, 1); // ×Ô¶¯ÉèÖÃReferer
curl_setopt($curl, CURLOPT_POST, 1); // ·¢ËÍÒ»¸ö³£¹æµÄPostÇëÇó
curl_setopt($curl, CURLOPT_POSTFIELDS, $data); // PostÌá½»µÄÊý¾Ý°ü
curl_setopt($curl, CURLOPT_COOKIEJAR, $GLOBALS['cookie_file']); // ´æ·ÅCookieÐÅÏ¢µÄÎ ......

ÍøվģÄâµÇ½±¸Íü£¨php + python£©

 php°æ£º
<?php
$cookie_file = fopen('cookie.txt','w');//dirname(__FILE__)."/cookie_".md5(basename(__FILE__)).".txt"; // ÉèÖÃCookieÎļþ±£´æ·¾¶¼°ÎļþÃû

function vlogin($url,$data){ // Ä£ÄâµÇ¼»ñÈ¡Cookieº¯Êý
$curl = curl_init(); // Æô¶¯Ò»¸öCURL»á»°
curl_setopt($curl, CURLOPT_URL, $url); // Òª·ÃÎʵĵØÖ·
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); // ¶ÔÈÏÖ¤Ö¤ÊéÀ´Ô´µÄ¼ì²é
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 1); // ´ÓÖ¤ÊéÖмì²éSSL¼ÓÃÜËã·¨ÊÇ·ñ´æÔÚ
curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']); // Ä£ÄâÓû§Ê¹ÓõÄä¯ÀÀÆ÷
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1); // ʹÓÃ×Ô¶¯Ìøת
curl_setopt($curl, CURLOPT_AUTOREFERER, 1); // ×Ô¶¯ÉèÖÃReferer
curl_setopt($curl, CURLOPT_POST, 1); // ·¢ËÍÒ»¸ö³£¹æµÄPostÇëÇó
curl_setopt($curl, CURLOPT_POSTFIELDS, $data); // PostÌá½»µÄÊý¾Ý°ü
curl_setopt($curl, CURLOPT_COOKIEJAR, $GLOBALS['cookie_file']); // ´æ·ÅCookieÐÅÏ¢µÄÎ ......

pythonÈçºÎÁ¬½ÓMySQLÊý¾Ý¿â

 
#!/usr/bin/env python
# -*-coding:UTF-8-*-#ÕâÒ»¾ä¸æËßpythonÓÃUTF-8±àÂë
#=========================================================================
#
# NAME: Python MySQL test
#
# AUTHOR: benyur
# DATE  : 2004-12-28
#
# COMMENT: ÕâÊÇÒ»¸öpythonÁ¬½ÓmysqlµÄÀý×Ó
#
#=========================================================================
"""
 ***** This is a MySQL test *****
 
 select:
  conn=Connection()
  conn.select_db('test')
  cur=conn.cursor()
  cur.execute('select * from user')
  cur.scroll(0)
  row1=cur.fetchone()
  row1[0]
  row1[1]
  row1[2]
 
 insert:
  cur.execute('insert into user (name,passwd) values('benyur','12345')')
  cur.insert_id()
 
 update:
  cur.execute('update user set passwd='123456' where name='benyur'')
 
 delete:
  cur.execute('delete from user where id=2')
 
 ******************* ......

pythonÈçºÎÁ¬½ÓMySQLÊý¾Ý¿â

 
#!/usr/bin/env python
# -*-coding:UTF-8-*-#ÕâÒ»¾ä¸æËßpythonÓÃUTF-8±àÂë
#=========================================================================
#
# NAME: Python MySQL test
#
# AUTHOR: benyur
# DATE  : 2004-12-28
#
# COMMENT: ÕâÊÇÒ»¸öpythonÁ¬½ÓmysqlµÄÀý×Ó
#
#=========================================================================
"""
 ***** This is a MySQL test *****
 
 select:
  conn=Connection()
  conn.select_db('test')
  cur=conn.cursor()
  cur.execute('select * from user')
  cur.scroll(0)
  row1=cur.fetchone()
  row1[0]
  row1[1]
  row1[2]
 
 insert:
  cur.execute('insert into user (name,passwd) values('benyur','12345')')
  cur.insert_id()
 
 update:
  cur.execute('update user set passwd='123456' where name='benyur'')
 
 delete:
  cur.execute('delete from user where id=2')
 
 ******************* ......

Ò»¸ö´óÅ£ÕûÀíµÄpython×ÊÔ´

 Python»ù±¾°²×°£º
    * http://www.python.org/ ¹Ù·½±ê×¼Python¿ª·¢°üºÍÖ§³Ö»·¾³£¬Í¬Ê±Ò²ÊÇPythonµÄ¹Ù·½ÍøÕ¾£»
    * http://www.activestate.com/ ¼¯³É¶à¸öÓÐÓòå¼þµÄÇ¿´ó·Ç¹Ù·½°æ±¾£¬ÌرðÊÇÕë¶ÔWindows»·¾³Óв»ÉٸĽø£»
PythonÎĵµ£º
    * http://www.python.org/doc/current/lib/lib.html Python¿â²Î¿¼Êֲᡣ
    * http://www.byteofpython.info/ ¿ÉÒÔ´úÌæTutorialʹÓã¬ÓÐÖÐÎÄÒë°æµÄÈëÃÅÊé¼®¡£
    * http://diveintopython.org/ Ò»±¾±È½ÏÈ«ÃæÒ׶®µÄÈëÃÅÊ飬ÖÐÎÄ°æ·­Òë×î½ü½ø²½ÎªºÜ¼°Ê±µÄ5.4ÁË¡£
    * http://www.python.org/peps/pep-0008.html ½¨Òé²ÉÓõÄPython±àÂë·ç¸ñ¡£
    * http://doc.zoomquiet.org/ °üÀ¨PythonÄÚÈݵÄÒ»¸öͦȫÃæµÄÎĵµ¼¯¡£
³£Óòå¼þ£º
    * http://www.pfdubois.com/numpy/ PythonµÄÊýѧÔËËã¿â£¬ÓÐʱºòһЩ±ðµÄ¿âÒ²»áµ÷ÓÃÀïÃæµÄһЩ¹¦ÄÜ£¬±ÈÈçÊý×éʲôµÄ£»
    * http://www.pythonware.com/products/pil/ PythonÏÂÖøÃûµÄͼÏñ´¦Àí¿âPil£»
    * ht ......

python 3.0Óëpython 2.xµÄÇø±ð

 ÕýÔÚÔĶÁ×îаæµÄ¡¶A byte of Python¡·¡£·¢ÏÖPython3.0ÔÚijЩµØ·½»¹ÊÇÓÐЩ¸Ä±äµÄ¡£×¼±¸ÂýÂýµÄÌå»á£¬ÓëÀÏ°æ±¾µÄ¡¶A byte of Python¡·×ö¶Ô±È£¬×îºóÔÙÈ¥²éÔĹٷ½ÍøÕ¾µÄÎĵµ¡£
1.
Èç¹ûÄãÏÂÔصÄÊÇ×îаæµÄPython£¬¾Í»á·¢ÏÖËùÓÐÊéÖеÄHello WorldÀý×Ó½«²»ÔÙÕýÈ·¡£
Old:
print "Hello World!" #´òÓ¡×Ö·û´®
New:
print("Hello World!")
½«×Ö·û´®·Åµ½À¨ºÅÖÐprint³öÀ´£¬ÕâÖÖд·¨¶ÔÓÚÎÒÕâÖÖѧϰJava³öÉíµÄÈËÀ´Ëµ£¬ºÜÊÇÇ×Çа¡£º£©
2.
Old:
guess = int(raw_input('Enter an integer : ')) #¶ÁÈ¡¼üÅÌÊäÈëµÄ·½·¨
New:
guess = int(input('Enter an integer : '))
·½·¨Ãû±äµÃ¸ü¼ÓÈÝÒ׼ǣ¡
3.
¼ÓÈëÁËÒ»¸öеÄnonlocal statement£¬·Ç¾Ö²¿±äÁ¿£¬ËüµÄ·¶Î§½éÓÚglobalºÍlocalÖ®¼ä£¬Ö÷ÒªÓÃÓÚº¯ÊýǶÌ×£¬Ó÷¨ÈçÏ£º
#!/usr/bin/python
# Filename: func_nonlocal.py
def func_outer():
    x = 2
    print('x is', x)
    def func_inner():
        nonlocal x
        x = 5
    func_inner()
  ......

python¿ì½Ý¼ü»ã¼¯


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