Python编程核心之makeTextFile.py和readTextFile.py

引言：

　　最近大半年都在学习python编程，在双十一的时候购买了《Python编程核心》，看到makeTextFile.py和readTextFile.py两个例子有点错误，所以在这里给修正一下！

makeTextFile.py脚本：

#!/usr/bin/env python
#_*_coding:utf8_*_

'makeTextFile.py -- create text file'

import os

ls = os.linesep

#get filename
while True:
    #需要添加的语句，并且需要缩进，后面的四条语句也需要缩进
    fname = raw_input("please input file name:\n")
    if os.path.exists(fname):
        print "ERROR: '%s' already exists" % fname
    else:
        break
#get file content (text) Lines
all_list = []
"""原著上使用了all做list，但是在使用eclipse是发现有assignment to reserved built-in symbol:all的warning,所以就使用all_list"""
#all = []
print "\nEnter lines ('.' by itself to quit).\n"

#loop until user terminates input
while True:
    entry = raw_input('> ')
    if entry == '.':
        break
    else:
        all_list.append(entry)
#write lines to file with proper line-ending
fobj = open(fname,'w')
fobj.writelines(['%s%s' % (x,ls) for x in all_list])
fobj.close()
print 'DONE!'

readTextFile.py脚本：

#!/usr/bin/env python
#_*_coding:utf8_*_

'readTextFile.py -- read and display text file'
#from makeTextFile import fobj

#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()