关于Windows系统下，Python读取文件的问题。

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在windows系统下，Python读取文件需要输入整个路径的名称，可以不是C盘，也可以是中文名字的路径。

输入的方法是函数 open(文件地址,’r’)

‘r’ 表示读取，’w’ 表示写入，’a’ 表示添加，’+’ 表示读写，’b’ 表示二进制访问

测试代码如下：

filename = raw_input('Enter file name:')

fobj = open (filename, 'r')

for eachLine in fobj:

print eachLine,

fobj.close()

运行后

>>>

Enter file name:G:\interesting\text.txt

I am a learner,

I like Python,

I want Python read this file.

Hello World

b) filename = raw_input('Enter file name:')

fobj = open (filename, 'r')

for eachLine in fobj:

print eachLine,

print 'You makeit! Congratulations!'

fobj.close()

运行后

Enter file name:G:\interesting\text.txt

I am a learner,

You make it! Congratulations!

I like Python,

You make it! Congratulations!

I want Python read this file.

You make it! Congratulations!

Hello World You make it! Congratulations!

之所以这里会有两行’ You make it! Congratulations!’是因为我在编辑text.txt时候，每一行后面都输入了两个回车

filename = raw_input('Enter file name:')

fobj = open (filename, 'r')

for eachLine in fobj:

print eachLine,

print '\n\

You make it! Congratulations!'

fobj.close()

运行后

>>>

Enter file name:G:\interesting\text.txt

I am a learner,

I like Python,

I want Python read this file.

Hello World

You make it! Congratulations!

在这里，我们发现，在print函数当中，’\n’会打印一个回车，’\’表示换行后继续打印，但是不管换几行，都会直接跳过这些回车，而不是打印这些回车。

d)更改文件名为’测试.txt’

filename = raw_input('Enter file name:')

fobj = open (filename, 'r')

for eachLine in fobj:

print eachLine,

print '\n\

You make it! Congratulations!'

fobj.close()

运行后

>>>

Enter file name:G:\interesting\测试.txt

I am a learner,

I like Python,

I want Python read this file.

Hello World

You make it! Congratulations!

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