python 簡單的txt檔案讀寫

標籤：class   lines   ioerror   int   each   error:   exists   bsp   ready   

1 讀取txt檔案。跟c相比，python的檔案讀寫簡直是方便的可怕

  首先是讀取檔案

  首先獲得檔案名稱，然後通過 open函數開啟檔案，通過for迴圈逐行讀出檔案內容

#!python file by ninahao 10.30‘readfile.py--read and display text file‘#get filenamefname=raw_input(‘enter file name:‘)print#attempt to open file for readingtry:    fobj=open(fname,‘r‘)except IOError,e:    print ‘open file--‘,fname,‘--error!:‘,eelse:    #display content to the screen    for eachline in fobj:        print eachlinefobj.close()

2 寫入檔案並儲存，同理，建立一個檔案，也是通過open函數。神奇。

#!maketext.py‘maketextfile.py--create text file‘import osls=os.linesep#get filenamewhile True:    fname=raw_input(‘enter file name : ‘)    if os.path.exists(fname):        print "ERROR: ‘%S‘ already exists" % fname    else:        break#get file content(text) linesall=[]print "\nEnter lines(‘.‘ by itself to quit).\n"#loop until user terminates inputwhile True:    entry=raw_input(‘>‘)    if entry==‘.‘:        break;

      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!‘

 

python 簡單的txt檔案讀寫