try:
    with open(‘data.txt‘,‘w‘) as data:
        print(‘Hello World‘,file=data)
except IOError as err:
    print(‘File Error:‘+str(err))

既然有了with，我们就可以更好的来对文件读取进行操作了，那么，我们何不试着将之前的操作文件的代码做一番修改呢，说干就干，代码如下：

man= []
other = []
try:
    data = open(‘sketch.txt‘)
    for each_line in data:
        try:
            (role,line_spoken) = each_line.split(":",1)
            line_spoken = line_spoken.strip()
            if role == ‘Man‘:
                man.append(line_spoken)
            elif role == ‘Other Man‘:
                other.append(line_spoken)
        except ValueError:
            pass
    data.close()
except IOError:
    print(‘The datafile is missing!‘)

try:
    with open(‘man_data.txt‘,‘w‘) as man_file:
        print(man,file=man_file)
    with open(‘other_data.txt‘,‘w‘) as other_file:
        print(other,file=other_file)
except IOError as err:
    print(‘File Error:‘+str(err))

好了，我们已经将文件的写入操作换成了with操作，这样代码也减少了许多，并且我们的代码的健壮性和增加了不少，下面是输出的结果：

man_data.txt:

[‘Is this the right room for an argument?‘, "No you haven‘t!", ‘When?‘, "No you didn‘t!", "You didn‘t!", ‘You did not!‘, ‘Ah! (taking out his wallet and paying) Just the five minutes.‘, ‘You most certainly did not!‘, "Oh no you didn‘t!", "Oh no you didn‘t!", "Oh look, this isn‘t an argument!", "No it isn‘t!", "It‘s just contradiction!", ‘It IS!‘, ‘You just contradicted me!‘, ‘You DID!‘, ‘You did just then!‘, ‘(exasperated) Oh, this is futile!!‘, ‘Yes it is!‘]

other_data.txt：

["I‘ve told you once.", ‘Yes I have.‘, ‘Just now.‘, ‘Yes I did!‘, "I‘m telling you, I did!", "Oh I‘m sorry, is this a five minute argument, or the full half hour?", ‘Just the five minutes. Thank you.‘, ‘Anyway, I did.‘, "Now let‘s get one thing quite clear: I most definitely told you!", ‘Oh yes I did!‘, ‘Oh yes I did!‘, ‘Yes it is!‘, "No it isn‘t!", ‘It is NOT!‘, "No I didn‘t!", ‘No no no!‘, ‘Nonsense!‘, "No it isn‘t!"]

细心的读者可能会发现，在进行处理之前，一句话就是一行，而处理之后所有的话都在一样了，所以我们还需要继续进行处理，让每一句话占用一行，可是怎样处理呢？还记得我们之前编写的print_lol函数吗？对，就是以下的这段代码：

"""这里是wukong模块，print_lol函数专门用来输出一个列表"""
"""增加一个level参数，表示在遇到嵌套输出时控制制表符的输出""" 
def print_lol(movies,indent=False,level=0):  
    for item_1 in movies:  
        if isinstance(item_1,list):  
            print_lol(item_1,indent,level+1)  
        else:
                if indent:
                         for tab_stop in range(level):
                                 print("\t",end=‘‘)
                print(item_1)

这里我们是进行了数据格式控制的，我们何不使用这个函数呢？可以这个函数中没有对应的file参数，那么我们首先要做的就是修改这个函数喽，好吧，继续加入参数吧，代码如下：

"""这里是wukong模块，print_lol函数专门用来输出一个列表"""
"""增加一个level参数，表示在遇到嵌套输出时控制制表符的输出"""
import sys
def print_lol(movies,indent=False,level=0,out=sys.stdout):  
    for item_1 in movies:  
        if isinstance(item_1,list):  
            print_lol(item_1,indent,level+1,out)  
        else:
                if indent:
                         for tab_stop in range(level):
                                 print("\t",end=‘‘,file=out)
                print(item_1,file=out)

这里我们加入了参数out=sys.stdout，我们知道=号后面的为默认值，此时的默认值为sys.stdout，即表示如果没有值的话直接向屏幕进行输出。这里注意我们在第一行导入了sys

好了，修改完成以后我们就可以使用这个函数了，如下：

import wukong
man= []
other = []
try:
    data = open(‘sketch.txt‘)
    for each_line in data:
        try:
            (role,line_spoken) = each_line.split(":",1)
            line_spoken = line_spoken.strip()
            if role == ‘Man‘:
                man.append(line_spoken)
            elif role == ‘Other Man‘:
                other.append(line_spoken)
        except ValueError:
            pass
    data.close()
except IOError:
    print(‘The datafile is missing!‘)


try:
    with open(‘man_data.txt‘,‘w‘) as man_file:
        wukong.print_lol(man,out=man_file)
    with open(‘other_data.txt‘,‘w‘) as other_file:
        wukong.print_lol(other,out=other_file)
except IOError as err:
    print(‘File Error:‘+str(err))

好了，现在我们可以运行这段代码了，但是在运行代码之前我们还有几件事情要强调下：

注意以上三点以后，我们就可以执行以上的代码了，运行结果如下：

man_data.txt：

Is this the right room for an argument?
No you haven‘t!
When?
No you didn‘t!
You didn‘t!
You did not!
Ah! (taking out his wallet and paying) Just the five minutes.
You most certainly did not!
Oh no you didn‘t!
Oh no you didn‘t!
Oh look, this isn‘t an argument!
No it isn‘t!
It‘s just contradiction!
It IS!
You just contradicted me!
You DID!
You did just then!
(exasperated) Oh, this is futile!!
Yes it is!

other_data.txt:

I‘ve told you once.
Yes I have.
Just now.
Yes I did!
I‘m telling you, I did!
Oh I‘m sorry, is this a five minute argument, or the full half hour?
Just the five minutes. Thank you.
Anyway, I did.
Now let‘s get one thing quite clear: I most definitely told you!
Oh yes I did!
Oh yes I did!
Yes it is!
No it isn‘t!
It is NOT!
No I didn‘t!
No no no!
Nonsense!
No it isn‘t!

好了，全部搞定！