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原标题:Modifying text documents with python

Let s say I had a .txt document with 1,000 names in it. The document would look like this:

Jon Jane Joe Jack Jeremy

and, so on.

Now, let s say, I wanted to append "is lame." to each of the names. So, I d want the list to look like this:

Jon is lame. Jane is lame. Joe is lame. Jack is lame. Jeremy is lame.

and, so on.

我将如何从指挥线 p起这样做?

问题回答
print    .join(i +   is lame.  for i in open(fname).read().split())

具体来说,这只是 p,但你们还是有这种想法。

In a loop parsing each token (name):
1.  Get the name into a string
2.  Append "is lame" or whatever else to the string
3.  Append that string onto a buffer

休息时间过后,用新的缓冲代替你的文件。

>>> s="Jon Jane Joe Jack Jeremy "
>>> s.replace(" ", " is lame. ")
 Jon is lame. Jane is lame. Joe is lame. Jack is lame. Jeremy is lame.  

请参看以下基本样本:

outputLines = []
with open( c:\file.txt ,  r ) as f:
    for line in f:
        if line.strip():
            outputLines.append(  is lame.  .join(line.strip().split()))
with open( c:\file.txt ,  w ) as f:
    for line in outputLines:
        f.write(line+ 
 )




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