TypeError: object of type 'int' has no len()问题

温斯顿的日记本

执行一个项目遇到下面错误提示：
Traceback (most recent call last):
  File "C:\Users\dahuang\Desktop\audiomapreduce-master\audiomapreduce.py", line 30, in <module>
    datasource = dict(enumerate(get_sample_data('test_data/OsBorges-EuSouComoVoceE.wav', num_of_samples=1000, skip=0)))
  File "C:\Users\dahuang\Desktop\audiomapreduce-master\audiomapreduce.py", line 13, in get_sample_data
    npts=len(num_of_samples)
TypeError: object of type 'int' has no len()

下面是主要代码：

1. import mincemeat
   
2. import wave
   
3. from struct import unpack
   
4. 
   
5. 
   
6. def get_sample_data(path_to_audiofile, start_pos=0, num_of_samples=44100, skip=1000):
   
7. 
   
8.     audioData = wave.open(path_to_audiofile, 'r')
   
9.     audioData.setpos(start_pos)
   
10.     samples = audioData.readframes(num_of_samples)
    
11.     number_of_channels = audioData.getnchannels()
    
12. 
    
13.     npts=len(num_of_samples)
    
14.     formatstr = '%ih' % (npts/2)
    
15.     int_data = unpack(formatstr, samples)
    
16. 
    
17.     format_data = []
    
18.     i = 0
    
19.     skip *= number_of_channels
    
20. 
    
21.     for sample in int_data:
    
22.         i += number_of_channels
    
23.         if i % skip != 0:
    
24.             continue
    
25.         format_data.append(sample)
    
26. 
    
27.     return format_data
    
28. 
    
29. 
    
30. datasource = dict(enumerate(get_sample_data('test_data/OsBorges-EuSouComoVoceE.wav', num_of_samples=1000, skip=0)))
    
31. 
    
32. def mapfn(k, v):
    
33.     for w in v:
    
34.         yield abs(w), 1
    
35. 
    
36. 
    
37. def reducefn(k, vs):
    
38.     result = sum(vs)
    
39.     return result
    
40. 
    
41. s = mincemeat.Server()
    
42. s.datasource = datasource
    
43. s.mapfn = mapfn
    
44. s.reducefn = reducefn
    
45. 
    
46. results = s.run_server(password="changeme")
    
47. print results

复制代码

特来向鱼C求救...

戴宇轩

第13行是什么意思?你想要程序如何工作?