python-encounters dictionary changed size during iteration

1C=02f={}3jiao={'Script One': 122000,'Script two': 189999,4        'script three': 99999,'Script 4': 25000000,'Jiaoben': 126}5  forIinchjiao.values ():6c=c+I7average=c/Len (Jiao)8  forLiinchJiao.keys ():9     ifJiao[li]>Average:Ten         delJiao[li] One #F.setdefault (Li,jiao[li]) A Print(average) - Print(LI)

The error occurs at this point:

Runtimeerror:dictionary changed size during iteration # dictionary changes the size of the dictionary at iteration time

There are two ways to find this problem online: 1. is deleted by converting to a list;

2. Copy for online

 for inch # change from result to Result.keys ()    if  not Result[key]:         del Result[key]         Continue

The second Test did not solve the problem, the warning still exists,

The workaround is not to delete it and reassign the data that is not deleted to a new dictionary.

Python-encountered dictionary changed size during iteration