《Python核心编程》部分错误纠正(勘误表)(持续更新)

Chapter 3：

例3-1 makeTextFile.py

#!/usr/bin/env python



'makeTextFile.py'

import os

ls = os.linesep



#get File name



while True:

    fname = raw_input("Enter file name: ")

    if os.path.exists(fname):

        print "ERROR: '%s' already exists" % fname

    else:

        break



#get file contents lines



all = []

print "\nEnter lines('.' by itself to quit).\n"



#loop until user terminate input



while True:

    entry = raw_input('> ')

    if entry == '.':

        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.write('\n',join(all))

fobj.close()

print "DONE"

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例3-2 readTextFile.py

#!/usr/bin/env python



'readTextFile.py'

#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()

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