Why does a "Permission denied" error occur when installing a module?

Question

Python

I'm trying to install the pytelegrambotapi module using the pip3.6 install pytelegrambotapi command. An error occurs:

pip3.6 install pytelegrambotapi
Collecting pytelegrambotapi
Requirement already satisfied: requests in /usr/local/lib/python3.6/dist-packages (from pytelegrambotapi)
Requirement already satisfied: six in /usr/local/lib/python3.6/dist-packages (from pytelegrambotapi)
Installing collected packages: pytelegrambotapi
Exception:
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/usr/local/lib/python3.6/dist-packages/pip/commands/install.py", line 342, in run
    prefix=options.prefix_path,
  File "/usr/local/lib/python3.6/dist-packages/pip/req/req_set.py", line 784, in install
    **kwargs
  File "/usr/local/lib/python3.6/dist-packages/pip/req/req_install.py", line 851, in install
    self.move_wheel_files(self.source_dir, root=root, prefix=prefix)
  File "/usr/local/lib/python3.6/dist-packages/pip/req/req_install.py", line 1064, in move_wheel_files
    isolated=self.isolated,
  File "/usr/local/lib/python3.6/dist-packages/pip/wheel.py", line 345, in move_wheel_files
    clobber(source, lib_dir, True)
  File "/usr/local/lib/python3.6/dist-packages/pip/wheel.py", line 316, in clobber
    ensure_dir(destdir)
  File "/usr/local/lib/python3.6/dist-packages/pip/utils/__init__.py", line 83, in ensure_dir
    os.makedirs(path)
  File "/usr/lib/python3.6/os.py", line 220, in makedirs
    mkdir(name, mode)
PermissionError: [Errno 13] Permission denied: '/usr/local/lib/python3.6/dist-packages/pyTelegramBotAPI-3.5.1.dist-info'

Answer 1

sudo, but it's better to put it in virtualenv.