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python¶ÁдÎļþ


1.open
ʹÓÃopen´ò¿ªÎļþºóÒ»¶¨Òª¼ÇµÃµ÷ÓÃÎļþ¶ÔÏóµÄclose()·½·¨¡£±ÈÈç¿ÉÒÔÓÃtry/finallyÓï¾äÀ´È·±£×îºóÄܹرÕÎļþ¡£
file_object = open('thefile.txt')
try:
     all_the_text = file_object.read( )
finally:
     file_object.close( )
×¢£º²»ÄܰÑopenÓï¾ä·ÅÔÚtry¿éÀÒòΪµ±´ò¿ªÎļþ³öÏÖÒ쳣ʱ£¬Îļþ¶ÔÏófile_objectÎÞ·¨Ö´ÐÐclose()·½·¨¡£
2.¶ÁÎļþ
¶ÁÎı¾Îļþ
input = open('data', 'r')
#µÚ¶þ¸ö²ÎÊýĬÈÏΪr
input = open('data')
 
¶Á¶þ½øÖÆÎļþ
input = open('data', 'rb')
 
¶ÁÈ¡ËùÓÐÄÚÈÝ
file_object = open('thefile.txt')
try:
     all_the_text = file_object.read( )
finally:
     file_object.close( )
 
¶Á¹Ì¶¨×Ö½Ú
file_object = open('abinfile', 'rb')
try:
    while True:
         chunk = file_object.read(100)
        if not chunk:
            break
         do_something_with(chunk)
finally:
     file_object.close( )
 
¶ÁÿÐÐ
list_of_all_the_lines = file_object.readlines( )
Èç¹ûÎļþÊÇÎı¾Îļþ£¬»¹¿ÉÒÔÖ±½Ó±éÀúÎļþ¶ÔÏó»ñȡÿÐУº
for line in file_object:
     process line
 
3.дÎļþ
дÎı¾Îļþ
output = open('data', 'w')
 
д¶þ½øÖÆÎļþ
output = open('data', 'wb')
 
×·¼ÓдÎļþ
output = open('data', 'w+')
 
дÊý¾Ý
file_object = open('thefile.txt', 'w')
file_object.write(all_the_text)
file_object.close( )
 
дÈë¶àÐÐ
file_object.writelines(list_of_text_strings)
×¢Ò⣬µ÷ÓÃwritelinesдÈë¶àÐÐÔÚÐÔÄÜÉÏ»á±ÈʹÓÃwriteÒ»´ÎÐÔдÈëÒª¸ß¡£
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×ܽáÏ£¬Python ÏÂÔØÍøÒ³µÄ¼¸ÖÖ·½·¨
1
 fd = urllib2.urlopen(url_link)
 data = fd.read()
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2
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def GetHtmlSource(url):
    try:
   
        htmSource = ''
 &nb ......

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Ê×ÏÈ£¬Ð¡²ËÔÚCÅ̽¨ÁËÒ»¸öÎı¾Îĵµ file.txt,ÊäÈëËĸö×Ö£ºÎÒÊÇС²Ë¡£
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>>> file=open("c:\\file.txt","r")
>>> data=file.read()
>> ......

Install Python + Eric IDE


Install Python Eric IDE
1 Download following things
 
1) Python3.1
 
2) PyQt for python 3.1
(http://www.riverbankcomputing.co.uk/software/pyqt/download) I am using
PyQt-Py3.1-gpl-4.7.3-2.exe
 
3) Eric5 IDE
(http://eric-ide.python-projects.org/eric-download.html)
 
2 ......

»ù±¾Êý¾Ý½á¹¹µÄpythonʵÏÖ ¶ÑÕ»

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ʹÓÃpythonµÄÁбí½á¹¹£¬ÏêÇé¿ÉÒԲ鿴help(list)
#Filename: stack.py
shoplist=['apple','mango','carrot','banana']
shoplist.append('rice')
popitem=shoplist[-1]
del shoplist[-1]
print 'the popitem is',popitem
......

Ïòpython¿¿½ü

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ÎÒϲ»¶Python£¬ÕâÊÇÒ»¸öÊÂʵ£¬ÎÒ׫´ ......
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