TypeError: len() of unsized object

Question

Traceback (most recent call last):
File "", line 1, in
File "E:\Anaconda3\lib\site-packages\spyderlib\widgets\externalshell\sitecustomize.py", line 699, in runfile
execfile(filename, namespace)
File "E:\Anaconda3\lib\site-packages\spyderlib\widgets\externalshell\sitecustomize.py", line 88, in execfile
exec(compile(open(filename, 'rb').read(), filename, 'exec'), namespace)
File "F:/05paper/graduation paper/Gmm/expertInstitution.py", line 27, in
main()
File "F:/05paper/graduation paper/Gmm/expertInstitution.py", line 23, in main
scholarInstition()
File "F:/05paper/graduation paper/Gmm/expertInstitution.py", line 17, in scholarInstition
if scholarData.iloc[j,0]==paperId.iloc[i]:
File "E:\Anaconda3\lib\site-packages\pandas\core\ops.py", line 739, in wrapper
if len(self) != len(other):
TypeError: len() of unsized object

Answer 1

你len访问的对象，它没有个数的概念。不能获取它的长度等。只有list等对象有len