PermissionError：[Errno 13]权限被拒绝：＆＃39; test.csv＆＃39;

Question

ERROR：

Traceback (most recent call last):
  File "C:\Users\ty\Dropbox\Level 2 files\combinedfilecreator1.0.py",     line 25, in <module>
    newFile = open('test.csv','w') #This is the new file we're trying to make
PermissionError: [Errno 13] Permission denied: 'test.csv'

一切似乎都很好，但我不理解我得到的这个错误。