Dear Michael,
I corrected the position of my codes and I debug the previous error. However, I got a new error:
I read some of your comments on this question and I tried to use your suggestions:
Thus I wrote these two lone of code to find out the problem:
print len (Choice) print (Choice [0])
Nevertheless, I faced with the error: object of type ‘BuilderKeyResponse’ has no len().
This is the final step of my experiment and I would appreciate any comments.