1，p124，错误：NameError: name 'print_lol' is not defined
要想文件内如图显示，需要把调用BIF print()改为调用第二章的nester模块中的print_lol()函数，因此需要导入nester模块。
首先需要修改第二章nester模块中的print_lol()函数并更新该模块，更新方法如图：
然后在sketch.py中调用print_lol()函数。
1 '''
2 修改时间：0919
3 修改内容：把调用BIF print()改为调用第二章的nester模块中的print_lol()函数，需要导入nester模块
4 '''
5 import nester
6
7 man=[]
8 other=[]
9 try:
10 data=open('sketch.txt')
11 for each_line in data:
12 try:
13 (role,line_spoken)=each_line.split(':',1)
14 line_spoken=line_spoken.strip()
15 if role=='Man':
16 man.append(line_spoken)
17 elif role=='Other Man':
18 other.append(line_spoken)
19 except ValueError:
20 pass
21 data.close()
22 except IOError:
23 print('The datafile is missing!')
24
25 try:
26 with open('man_data.txt','w') as man_file,open('other_data.txt','w') as other_file:
27 print_lol(man,fh=man_file)
28 print_lol(other,fh=other_file)
29 except IOError as err:
30 print('File Error:'+str(err))
这时会报错：
原因：
调用模块的函数时，格式为“模块名.函数名()”
因此代码更改为：
1 '''
2 修改时间：0919
3 修改内容：把调用BIF print()改为调用第二章的nester模块中的print_lol()函数，需要导入nester模块
4 注意：调用print_lol时，需要把模块名加上,nester.print_lol(),而不是直接调用print_lol().
5 '''
6 import nester
7
8 man=[]
9 other=[]
10 try:
11 data=open('sketch.txt')
12 for each_line in data:
13 try:
14 (role,line_spoken)=each_line.split(':',1)
15 line_spoken=line_spoken.strip()
16 if role=='Man':
17 man.append(line_spoken)
18 elif role=='Other Man':
19 other.append(line_spoken)
20 except ValueError:
21 pass
22 data.close()
23 except IOError:
24 print('The datafile is missing!')
25
26 try:
27 with open('man_data.txt','w') as man_file,open('other_data.txt','w') as other_file:
28 nester.print_lol(man,fh=man_file)
29 nester.print_lol(other,fh=other_file)
30 except IOError as err:
31 print('File Error:'+str(err))
2. pickle模块中dump()和load()的用法
dump()保存数据，load()恢复数据，即下载数据
try:
with open('man_data.txt','wb') as man_file,open('other_data.txt','wb') as other_file:
pickle.dump(man,man_file)
pickle.dump(other,other_file)
except pickle.PickleError as perr:
print('Pickling Error:'+str(perr))
import pickle
import nester
new_name=[]
try:
with open('man_data.txt','rb')as man_file:
new_name=pickle.load(man_file)
except IOError as err:
print('File error:'+str(err))
except pickle.PickleError as perr:
print('Pickling Error:'+str(perr))
nester.print_lol(new_name)
