----------------------------------------------------------------------
 Ran 12 tests in 0.081s
 OK
 >>> Creating test database for alias 'default'...
 Destroying test database for alias 'default'...
 Traceback (most recent call last):
   File "/usr/bin/coverage", line 9, in <module> load_entry_point('coverage==4.3.4', 'console_scripts', 'coverage')()
   File "/usr/lib/python3.4/site-packages/coverage/cmdline.py", line 756, in main status = CoverageScript().command_line(argv)
   File "/usr/lib/python3.4/site-packages/coverage/cmdline.py", line 483, in command_line return self.do_run(options, args)
   File "/usr/lib/python3.4/site-packages/coverage/cmdline.py", line 641, in do_run self.coverage.save()
   File "/usr/lib/python3.4/site-packages/coverage/control.py", line 742, in save self.data_files.write(self.data, suffix=self.data_suffix)
   File "/usr/lib/python3.4/site-packages/coverage/data.py", line 673, in write data.write_file(filename)
   File "/usr/lib/python3.4/site-packages/coverage/data.py", line 460, in write_file with open(filename, 'w') as fdata:
 PermissionError: [Errno 13] Permission denied: '/.coverage'