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!'