Python系列之笨方法学Python是我学习《笨方法学Python》—Zed A. Show著

的学习思路和理解，如有不如之处，望指出！！！

ex15 涉及两个文件：一个是ex15.py文件，一个是ex15_sample.txt文件。该文本文件的内容如下：

This is stuff I typed into a file.

It is really cool stuff.

Lots and lots of fun to have in here.

ex15.py 的作用就是用自己设计的脚本“打开”txt文件。

文章主要分为以下部分：

[TOC]

原文—摘录至《笨方法学Python》第三版

&

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# ex15.py
from
script,filename=argv
txt=open(filename)
print
print
print
file_again=raw_input('> '
txt_again=open(file_again)
print

# ex16.py

from
script,filename=argv
print
print
print
raw_input("?"
print
target=open(filename,'w'
print
target.truncate()
print
line1=raw_input("line 1: "
line2=raw_input("line 2: "
line3=raw_input("line 3: "
print
target.write(line1)
target.write("\n"
target.write(line2)
target.write("\n"
target.write(line3)
target.write("\n"
print
target.close()

应该看到的结果

推荐使用windows下的Powershell（命令行）

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> python ex15.py ex15_sample.txt
This is
It is
Lots and

Type the filename again:
> ex15_sample.txt
This is
It is
Lots and

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> python ex16.py test.txt
We're
If
If
?
Opening the file
Truncating the file
Now I'm
I'm
line1: Hello world
line2: Hello Python
line3: let's
I'm
And

附加练习

以下摘录自原文

  1. 每一行都写一下注释

  2. 利用pydoc 功能查一下read()命令、write()命令、close()命令等