python中文件读写的快速入门实例
#!/usr/bin/env python'makeTextFile.py -- create text file'
import os
ls = os.linesep
# get filename
while True:
fname = raw_input('Please input the filename: ')
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('> ')
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.close()
print 'DONE!'
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