Python核心编程第二版学习笔记

最近闲来无事，就翻了翻几年前买的一本《python核心编程（第二版）》，想学习一下python，然后在编写第三章例3.1时发现书上的代码是错误的。大家可以自己编写一下。然后自己修改了下，如下：

#/usr/bin/env python

'makeTextFile.py -- create text file'

import os

ls = os.linesep

#get file name
while True:
    fname = raw_input('Enter a filename:')
    if os.path.exists(fname):
        print "Error: '%s' already exists" % fname
    else:
        break

all = []
print "\n Enter lines ('.' by itself to quit).\n"
#loop until user terminates input
while True:
     enter = raw_input('>')
     if enter == '.':
        break
     else:
        all.append(enter)


#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'