Python on Windows, installing 3dr solo command line, PermissionError: [Errno 13]

Question

I am trying to install 3DR solo command line on Windows 10. Below is the exception that i get. i have been doing a lot of reading and googling. I couldnt figure out the permission denied problem. I have this part shutil.copyfile(srcfile, destfile), but i still get denied.

Exception: Traceback (most recent call last): File "c:\python35\lib\site-packages\pip\basecommand.py", line 211, in main status = self.run(options, args)

File "c:\python35\lib\site-packages\pip\commands\install.py", line 311, in run root=options.root_path,

File "c:\python35\lib\site-packages\pip\req\req_set.py", line 646, in install **kwargs

File "c:\python35\lib\site-packages\pip\req\req_install.py", line 803, in install self.move_wheel_files(self.source_dir, root=root)

File "c:\python35\lib\site-packages\pip\req\req_install.py", line 998, in
move_wheel_files isolated=self.isolated,

File "c:\python35\lib\site-packages\pip\wheel.py", line 339, in
move_wheel_files clobber(source, lib_dir, True)

File "c:\python35\lib\site-packages\pip\wheel.py", line 317, in clobber
shutil.copyfile(srcfile, destfile)

File "c:\python35\lib\shutil.py", line 115, in copyfile with open(dst, 'wb') as fdst:

PermissionError: [Errno 13] Permission denied: 'c:\python35\Lib\site-packages\_cffi_backend.cp35-win32.pyd'

Answer 1

This is going to sound simple but are you running an elevated command line?

Answer 2

If you are upgrading the cffi package i.e. you had it already installed and doing pip install xyz package that is trying to upgrade cffi to its last version, all you have to do is simply delete: c:\python35\Lib\site-packages\_cffi_backend.cp35-win32.pyd then try again.