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from http://blog.alexa-pro.cn/?p=189
1: os.listdir(path) //pathΪĿ¼
¹¦ÄÜÏ൱ÓÚÔÚpathĿ¼ÏÂÖ´ÐÐdirÃüÁ·µ»ØÎªlistÀàÐÍ
print os.listdir('..')
Êä³ö£º
[a,b,c,d]
2: os.path.walk(path,visit,arg)
path £ºÊǽ«Òª±éÀúµÄĿ¼
visit £ºÊÇÒ»¸öº¯ÊýÖ¸Õ룬º¯ÊýÔ²ÐÎΪ£º
callback(arg,dir,fileList)
ÆäÖÐargΪΪ´«¸øwalkµÄarg £¬ dirÊÇpathϵÄÒ»¸öĿ¼£¬fileListΪdirϵÄÎļþºÍĿ¼×é³ÉµÄlist
arg£º´«¸øvisitÓõ쬶ÔwalkûÓÐʲô×÷ÓÃ
¾ÙÀý£º
def callback(arg,directory, files):
print directory,
print files,
print arg
print '——————–'
os.path.walk('.',callback, '123456′)
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. ['path0704.py', 'temp', '\xc2\xb7\xbe\xb6\xcf\xe0\xb9\xd8\xd1\xa7\xcf\xb0.txt'] 123456
——————–
.\temp ['temp.h', 'temp1'] 123456
——————–
.\temp\temp1 ['abc.bmp'] 123456
Èç¹ûÏëÕÒµ½Ä³¸öĿ¼ÏÂËùÓÐÎļþ£¬Ö»ÐèÒªÔÚcallbackÀïÃæ£¬ÔÚfileListÖÐÕÒ³öÎļþ£¬¼´¿É³ý´ËÖ®Í⣬»¹ÓÐÒ»¸öº¯Êý¿ÉÒÔÓÃÄǾÍÊÇos.walk£¬¿´10
3£ºos.path.split(path)
path Ϊһ¸ö·¾¶£¬
Êä³ö£¬°Ñpath·Ö³ÉÁ½²¿·Ö£¬¾ßÌ忴ʵÀý£º
print os.path.split("abc/de.txt")
('abc', 'de.txt')
os.path.split("abc")
(", 'abc')
print os.path.split("de/abc/de")
('de/abc', 'de')
4: os.path.splitext(filename)
°ÑÎļþÃû·Ö³ÉÎļþÃû³ÆºÍÀ©Õ¹Ãû
os.path.splitext(abc/abcd.txt)
('abc/abcd', '.txt')
5: os.path.dirname(path)
°ÑĿ¼ÃûÌá³öÀ´
print os.path.dirname("abc")
#Êä³öΪ¿Õ
print os.path.dirname('abc\def')
abc
6£º os.path.basename(filename)
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print os.path.basename('abc')
abc
print os.path.basename('abc.txt')
abc
print os.path.basename('bcd/abc')
abc #Õâ¸öÐèҪעÒâ²»°üÀ¨Ä¿Â¼Ãû³Æ
print os.path.basename('.')
.
7£ºos.mkdir(path, [mode])
pathΪĿ¼Ãû£º ÕâÀïÓиöÒªÇó£¬Ö»ÄÜ´´½¨Ò»¼¶Ä¿Â¼
±ÈÈçpathΪ abc/def Ôòµ±Ç°Ä¿Â¼Ï±ØÐë´æÔÚabc ·ñÔòʧ°Ü
8£º os.makedirs(path [,mode])
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9£ºos.remove(path)ɾ³ýÒ»¸öÎļþ£¬Ò»¶¨ÊÇÒ»¸öÎļþ
os.removedirs(path) ɾ³ýÒ»¸öĿ¼ÏÂËùÓж«Î÷
os.rmdir(path) ɾ³ýÒ»¸öĿ¼£¬¶øÇÒÒ»¶¨Òª¿Õ£¬·ñÔ


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×î½üÔÚÓÃPython´¦ÀíһЩÊý¾Ý£¬Êý¾ÝÐèÒª´æ´¢µ½MySQLÊý¾Ý¿âÖУ¬²ÉÓÃMySQLdbÀ´½øÐÐÊý¾Ý¿âµÄ²Ù×÷£¬µ«ÊDZ»Ò»¸öÎÊÌâÀ§ÈÅÁ˺ܾá£ÔÚ´ò¿ªÊý¾Ý¿âµÄʱºòMySQLdb.connect(self.host, self.user, self.password, self.database, port=self.port)³öÒì³££¬¶øÇÒÒì³£³öÏÖµÄλÖ÷dz£Ææ¹Ö¡£
³öÏÖÔÚconverters.py 164ÐÐ
from decimal import ......

python execºÍeval


execÓï¾äÓÃÀ´Ö´Ðд¢´æÔÚ×Ö·û´®»òÎļþÖеÄPythonÓï¾ä¡£ÀýÈ磬ÎÒÃÇ¿ÉÒÔÔÚÔËÐÐʱÉú³ÉÒ»¸ö°üº¬Python´úÂëµÄ×Ö·û´®£¬È»ºóʹÓÃexecÓï¾äÖ´ÐÐÕâЩÓï¾ä¡£ÏÂÃæÊÇÒ»¸ö¼òµ¥µÄÀý×Ó¡£
>>> exec 'print "Hello World"'
Hello World
evalÓï¾äÓÃÀ´¼ÆËã´æ´¢ÔÚ×Ö·û´®ÖеÄÓÐЧPython±í´ïʽ¡£ÏÂÃæÊÇÒ»¸ö¼òµ¥µÄÀý×Ó¡£
>>> ......

pythonÖÐeval, exec, execfile,ºÍcompile


eval(str [,globals [,locals ]])º¯Êý½«×Ö·û´®strµ±³ÉÓÐЧPython±í´ïʽÀ´ÇóÖµ£¬²¢·µ»Ø¼ÆËã½á¹û¡£
ͬÑùµØ, execÓï¾ä½«×Ö·û´®strµ±³ÉÓÐЧPython´úÂëÀ´Ö´ÐÐ.Ìṩ¸øexecµÄ´úÂëµÄÃû³Æ¿Õ¼äºÍexecÓï¾äµÄÃû³Æ¿Õ¼äÏàͬ.
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>>> ev ......

python·¢ÓʼþµÄ´úÂë

# -*- coding: cp936 -*-
from email.MIMEText import MIMEText
from email.MIMEMultipart import MIMEMultipart
import smtplib
 
#´´½¨Ò»¸ö´ø¸½¼þµÄʵÀý
msg = MIMEMultipart()
#¹¹Ô츽¼þ
att = MIMEText(open('e:\\test.txt').read(), 'base64', 'gb2312')
att["Content-Type"] = 'application/ ......
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