Python笔记（二）文本的创建和读取

学习Python已有数日，这是今天的战利品：

1.创建文本（createtext.py）

程序如下：

#create text file

import os ls = os.linesep

print("******create file******")

#get filename while True:     fname = input("enter your file name:")     if os.path.exists(fname):         print("error: '%s' already exists"%fname)     else:         break

#get file content lines all = [] print("\nEnter lines ('.'by itself to quit).\n")

#loop until user terminates input while True:     entry = 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')

程序验证：

文本查看器查看：

2.读取文本文件（readtext.py)

程序如下：

#read and dislay text file print("read and dislay text file")

fname = input("Enter filename:") print        #display a empty line

#attempt to open file for reading try:     fobj = open(fname, 'r') except IOError:     print("file open error:") else:     #display contents     print('_ '*10,)     for eachLine in fobj:         print(eachLine,end = '') #end参数，默认为'\n'     fobj.close() print('_ '*10) print("Done")

程序验证：

Let me go on...