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

pythonѧϰ

 4¡¢Tuples Ôª×é
     Ôª×éºÍListsÏàËÆ£¬µ«ËüÊÇimmutable,³õʼ»¯ºó²»ÄܸıäÆäÄÚÈÝ£¬ÕâÔÚ³ÌÐòÖÐÓÐʱºòºÜÓÐÓ㬿ÉÒÔÓÃÀ´·ÀÖ¹¶¨ÒåµÄ±äÁ¿ÄÚÈݱ»ÒâÍâ¸Ä±ä¡£
5¡¢Files Îļþ
    Îļþ²Ù×÷ºÍcÓïÑԱȽϽӽü£¬ÏÂÃæÖ»Í¨¹ý´úÂëÑÝʾ£º
>>> f = open('data.txt','w')
>>> f.write('mike\n')
>>> f.write('wolf\n')
>>> f.close()
>>> f = open('data.txt')
>>> bytes = f.read()
>>> bytes
'mike\nwolf\n'
>>> print bytes
mike
wolf
>>> bytes.split()
['mike', 'wolf']
>>> bytes
'mike\nwolf\n'
6¡¢ÆäËûÊý¾ÝÀàÐÍ
Set(¼¯ºÏ)£¬fixed prescion floating number (¹Ì¶¨¾«¶ÈµÄ¸¡µãÊý)£¬Boolean£¨²¼¶û±äÁ¿£©£¬placehold£¨Õ¼Î»·û£©µÈ¡£
ÏÂÃæ¿´ÏÂʹÓõÄһЩ´úÂ룺
>>> x = set([1, 2, 3,4])
>>> y = set([3,4, 5,6])
>>> x|y
set([1, 2, 3, 4, 5, 6])
>>> x+y
Traceback (most recent call last):
File "<pyshell#15>", line 1, in <module>
x+y
TypeError: unsupported operand type(s) for +: 'set' and 'set'
>>> x,y
(set([1, 2, 3, 4]), set([3, 4, 5, 6]))
>>> x&y
set([3, 4])
>>> x-y
set([1, 2])
>>> y-x
set([5, 6])
>>> import decimal
>>> d = decimal.Decimal('4.321')
>>> d
Decimal('4.321')
>>> 1>2
False
>>> 1<2
True
>>> None
>>> L = [None]*5
>>> L
[None, None, None, None, None]
>>>
PythonÖеÄÀàÐͼì²é´úÂ룺
>>> L
[None, None, None, None, None]
>>> type(L)
<type 'list'>
>>> type(type(L))
<type 'type'>
>>> if type(L)==type([]):
print('ÀàÐÍÏàͬ')

ÀàÐÍÏàͬ
>>> if type(L)==list: #ÓÃÀàÐÍÃû×Ö
print('ok')

ok
>>> if isinstance(L,list):
print('yes')

yes
>>>
7¡¢Óû§¶¨ÒåÀà user-defined class
>>> class worker:
def __init__(self, name, pay):
self.name = name
self.pay = pay
def lastname(self):


Ïà¹ØÎĵµ£º

python PIL ÅúÁ¿´¦Àí´¦ÀíͼƬ

¿Í»§¸øÒ»¶ÑͼƬҪ´«µ½ºǫ́£¬Í¼Æ¬Ì«´óÁË£¬ÉϰÙÕÅͼÓÃphotoshop¸ÄÌ«Âý£¬¾ÍÏëµ½ÓÃpythonд¸ö¼òµ¥µÄÅú´¦Àí¡£¹¦Äܼòµ¥¾ÍÊǰÑԭͼ°´±ÈÀýËõС£¬´úÂë¸ü¼òµ¥ 20¶àÐС£
# -*- coding: cp936 -*-
import Image
import glob, os
#ͼƬÅú´¦Àí
def timage():
for files in glob.glob('D:\\1\\*.JPG'):
filepath,filena ......

Python±Ê¼Ç£¨8£©

PythonµÄÃæÏò¶ÔÏóÐÔÖÊ
ÀàºÍ¶ÔÏóÊÇÃæÏò¶ÔÏó±à³ÌµÄÁ½¸öÖ÷Òª·½Ãæ¡£Àà´´½¨Ò»¸öÐÂÀàÐÍ£¬¶ø¶ÔÏóÕâ¸öÀàµÄ ʵÀý ¡£ÕâÀàËÆÓÚÄãÓÐÒ»¸öintÀàÐ͵ıäÁ¿£¬Õâ´æ´¢ÕûÊýµÄ±äÁ¿ÊÇintÀàµÄʵÀý£¨¶ÔÏ󣩡£
 
ÐèҪעÒâµÄÊÇ£¬ÔÚPythonÖУ¬¼´±ãÊÇÕûÊýÒ²±»×÷Ϊ¶ÔÏó£¨ÊôÓÚintÀࣩ¡£ÕâºÍC++¡¢Java£¨1.5°æÖ®Ç°£©°ÑÕûÊý´¿´â×÷ΪÀàÐÍÊDz»Í¬µÄ¡£Í¨¹ ......

Python±Ê¼Ç£¨10£©

PythonÖеÄÒì³£
 
µ±ÄãµÄ³ÌÐòÖгöÏÖijЩÒì³£µÄ×´¿öµÄʱºò£¬Òì³£¾Í·¢ÉúÁË¡£
 
Ò».´¦ÀíÒì³£
ÎÒÃÇ¿ÉÒÔʹÓÃtry..exceptÓï¾äÀ´´¦ÀíÒì³£¡£ÎÒÃǰÑͨ³£µÄÓï¾ä·ÅÔÚtry-¿éÖУ¬¶ø°ÑÎÒÃǵĴíÎó´¦ÀíÓï¾ä·ÅÔÚexcept-¿éÖС£
ÀýÈç:
#!/usr/bin/python
# Filename: try_except.py
import sys
try:
s = raw_input('E ......

PythonÖÐÎÄÈ«¹¥ÂÔ

http://blog.chinaunix.net/u1/59571/showart_1901962.html
1.        ÔÚPythonÖÐʹÓÃÖÐÎÄ
ÔÚPythonÖÐÓÐÁ½ÖÖĬÈϵÄ×Ö·û´®£ºstrºÍunicode¡£ÔÚPythonÖÐÒ»¶¨Òª×¢ÒâÇø·Ö“Unicode×Ö·û´®”ºÍ“unicode¶ÔÏó”µÄÇø±ð¡£ºóÃæËùÓеēunicode×Ö·û´®”Ö¸µÄ¶¼ÊÇpyt ......

pythonѧϰ

3¡¢Lists Êý¾ÝÀàÐÍ
 
    ÔÚpythonÖУ¬listsÊÇÐòÁÐÈÝÆ÷£¬Ëü¿ÉÒÔÈÝÄÉÈκÎÀàÐ͵ĶÔÏ󡣺Ístrings²»Í¬£¬ListsÖ§³ÖÔ­µØÐÞ¸Ä(mutalbe in place),ͨ¹ýϱêÒýÓõķ½Ê½£¬¿ÉÒÔÐÞ¸ÄListsµÄÄÚÈÝ£¬ÈçpÊÇLists¶ÔÏó£¬ Ôò¿ÉÒÔͨ¹ýp[1] = '123'ÕâÖֵķ½Ê½¸Ä±äpµÄÄÚÈÝ¡£
   ListsÊÇÐòÁÐÈÝÆ÷£¬Ö§³ÖÈκÎÐòÁÐ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ