https://github.com/ansible/ansible/blob/1706d35fc476e36fcced25435c2f1c2401536376/test/lib/ansible_test/_util/controller/sanity/validate-modules/validate_modules/main.py#L414

When a module is in place to provide documentation for an action, it should be allowed to have a doc string.

Without a docstring users of pydocstring will need to suppress:

```
************* Module plugins.modules.git_away
plugins/modules/git_away.py:1:0: C0114: Missing module docstring (missing-module-docstring)
************* Module plugins.modules.git_here
plugins/modules/git_here.py:1:0: C0114: Missing module docstring (missing-module-docstring)
```

With a doc string the module is treated as a "real" module and fails sanity:

```
ansible-module-not-initialized: Execution of the module did not result in initialization of AnsibleModule
```

PEP257 suggests modules should have a docstring, and is generally considered a good practice to inform future developers of the purpose of the file and can be used for documentation generation as well.
for child in self.ast.body:
            if isinstance(child, ast.Import):
                if child.names[0].name == 'subprocess':
                    for line_no, line in enumerate(self.text.splitlines()):
                        sp_match = SUBPROCESS_REGEX.search(line)
                        if sp_match:
                            self.reporter.error(
                                path=self.object_path,
                                code='use-run-command-not-popen',
                                msg=('subprocess.Popen call found. Should be module.run_command'),
                                line=(line_no + 1),
                                column=(sp_match.span()[0] + 1)
                            )
    def _check_for_os_call(self):
        if 'os.call' in self.text:
            for line_no, line in enumerate(self.text.splitlines()):
                os_call_match = OS_CALL_REGEX.search(line)
                if os_call_match:
                    self.reporter.error(
                        path=self.object_path,
                        code='use-run-command-not-os-call',
                        msg=('os.call() call found. Should be module.run_command'),
                        line=(line_no + 1),
                        column=(os_call_match.span()[0] + 1)
                    )
    def _find_rejectlist_imports(self):