life is a chocolate

#还是2个参数的都用命令行来传吧
# -*- coding: utf-8 -*-
import os,sys
CDROM ='e:\windows'
def cdWalker(cdrom,cdcfile):
    export=""
    for root,dirs,files in os.walk(cdrom):
        export+="\n %s;%s;%s" % (root,dirs,files)
    open(cdcfile,'w').write(export)
#cdWalker('e:\windows','cd1.cdc')
cdWalker(sys.argv[1],sys.argv[2])

代码来自可爱的python 

# -*- coding: utf-8 -*-
import os,sys
CDROM ='e:\windows'
def cdWalker(cdrom,cdcfile):
    export=""
    for root,dirs,files in os.walk(cdrom):
        export+="\n %s;%s;%s" % (root,dirs,files)
    open(cdcfile,'w').write(export)
#cdWalker('e:\windows','cd1.cdc')
if "-e"==sys.argv[1]:
    cdWalker(CDROM,sys.argv[2])
    print "记录光盘信息到 %s" %sys.argv[2]
else:
    print '''PyCDC使用方式:
    python pycdc.py -e mycd1-1.cdc
    #将光盘内容记录为mycd1-1.cdc
    '''

然后先前我设置了环境变量，结果就直接cmd下执行python e:\pycdc1.py -e e:\mycd1.cdc

后来一次不小心关掉cmd之后，我想起了Python(command line) 打开之后我输入了同样的命令

>>> python e:\pycdc1.py -e e:\mycd1.cdc
  File "<stdin>", line 1
    python helloworld.py
                    ^
SyntaxError: invalid syntax

谷歌之

the >>> prompt indicates you are already running python interpreter.

You need to enter that command from the shell prompt.

Press Ctrl-D to exit Python to the ordinary shell prompt and try again.

Python学习手册上的一个笑话  看不懂

在Python学习手册的第33页 

送给Python代码的例子加入一种幽默的特质。比如，一般说来，传统的变量名为"foo"和"bar"，在Python的世界中变成了"spam"和"eggs"。而有时出现的"Brian"、"ni"、"shrubbery"等也是这样来的，这种方法设置很大程度上影响了Python社区：Python会议上的演讲往往叫做"The Spanish Inquisition" 。

当然，如果你熟悉这个幽默剧的话，所有这些你都会觉得很有趣，否则就那么有意思了。你没有必要为了理解引自Monty Python（也许这本书中你就会找到）的例子而刻意去熟悉这一串剧情，但是至少你现在应该知道它们的来源。

有点好奇，虽然以后可能会在书中看到，我还是打算先把这个记录下来。。

    很早很早就想学python，一直没开动，今天突然兴起，照着书敲了2个demo,第一个if语句那一直报错，不知道错哪。。。。

#!/usr/bin/env python
'makeTextFile.py -- create text file'

import os
ls = os.linesep

#get filename
while True:

if os.path.exists(fname):
    print "ERROR: '%s' already exists" %fname
else:
    break

#get file content (text) lines
all = []
print "\nEnter lines ('.' by itself to quit).\n"

#loop until user terminates input
while True:
    entry = raw_input('>')
        break;
    else:
        all.append(entry)

#write lines to file with proper line ending
fobj = open(fname,'w')
fobj.writelines(['%s%s' % (x,ls) for x in all])
fobj.close()
print 'DONE!'

第2个 可以运行了。。

#!/user/bin/env python

'readTextFile.py -- read and display text file'

# get filename
fname = raw_input('Enter filename:')
print

#attempt to open file for reading
try:
    fobj = open(fname,'r')
except IOError,e:
    print "***file open error:",e
else:
    #display contents to the screen
    for eachLine in fobj:
        print eachLine,
    fobj.close()

先这样了  还要做俯卧撑，然后洗澡睡觉～

2011-08-23  09:13

经过网友的热心帮助  修改makeTestFile.py如下 

#!/usr/bin/env python
'makeTextFile.py -- create text file'
 
import os
ls = os.linesep
 
#get filename
while True:
 
    if os.path.exists(fname):
        print "ERROR: '%s' already exists" %fname
    else:
        break
 
#get file content (text) lines
all = []
print "\nEnter lines ('.' by itself to quit).\n"
 
#loop until user terminates input
while True:
    entry = raw_input('>')
    break;
else:
    all.append(entry)
 
#write lines to file with proper line ending
fobj = open(fname,'w')
fobj.writelines(['%s%s' % (x,ls) for x in all])
fobj.close()
print 'DONE!'