Repository: PyGithub/PyGithub

Issue:
Misleading `Repository.create_fork` docstring?
I'm currently exploring the behaviour of GH's edge cases, and figured PyGithub was a more convenient way to access it than raw `requests` calls, however in looking at `create_fork` I stumbled upon something odd: the docstring says

>     :param organization: string or "none" or "*"

however:

* `*` is mentioned nowhere in github's own documentation
* there seems to be no special codepath inside pygithub special-casing this, the string is just passed directly to the API
* when calling `repo.create_fork("*")` I get the same error as passing in any other non-existent organisation name:
  ```
  github.GithubException.GithubException: 422 {
      "message": "Validation Failed", 
      "errors": [{
          "resource": "Fork",
          "code": "invalid",
          "field": "organization"
      }],
      "documentation_url": "https://docs.github.com/rest/reference/repos#create-a-fork"
  }
  ```

Is this a remnant of an older revision or somesuch? I think this section of docstrings should probably be updated to:

```reStructuredText
:param str organization: name of the organisation to create the fork in, omit to fork in the current user's account
```
(after some testing, specifying the current user's login explicitely fails, and the error message explicitely notes that the error comes from it being a *user account* a opposed to an organisation)

/cc @timgates42 


Discussion:
Also maybe this paramete could / should take an actual `Organization` object for better typing?
That is very odd. Since the history has been squashed of the commit that merged it, I don't have history of that docstring changing during development, and digging into GitHub developer docs from the past also doesn't match anything like that. I agree with you, it should be a string of an org name or an Organization object.

Resolving patch:
diff --git a/github/Repository.py b/github/Repository.py
--- a/github/Repository.py
+++ b/github/Repository.py
@@ -2325,15 +2325,16 @@ def get_forks(self):
     def create_fork(self, organization=github.GithubObject.NotSet):
         """
         :calls: `POST /repos/{owner}/{repo}/forks <https://docs.github.com/en/rest/reference/repos#forks>`_
-        :param organization: string or "none" or "*"
+        :param organization: :class:`github.Organization.Organization` or string
         :rtype: :class:`github.Repository.Repository`
         """
-        assert organization is github.GithubObject.NotSet or isinstance(
-            organization, str
-        ), organization
         post_parameters = {}
-        if organization is not github.GithubObject.NotSet:
+        if isinstance(organization, github.Organization.Organization):
+            post_parameters["organization"] = organization.login
+        elif isinstance(organization, str):
             post_parameters["organization"] = organization
+        else:
+            assert organization is github.GithubObject.NotSet, organization
         headers, data = self._requester.requestJsonAndCheck(
             "POST",
             f"{self.url}/forks",


Test patch:
diff --git a/tests/ReplayData/Repository.testCreateForkOrg.txt b/tests/ReplayData/Repository.testCreateForkOrg.txt
new file mode 100644
--- /dev/null
+++ b/tests/ReplayData/Repository.testCreateForkOrg.txt
@@ -0,0 +1,21 @@
+https
+GET
+api.github.com
+None
+/orgs/prtg-dev
+{'Authorization': 'Basic login_and_password_removed', 'User-Agent': 'PyGithub/Python'}
+None
+200
+[('status', '200 OK'), ('x-ratelimit-remaining', '4960'), ('content-length', '928'), ('server', 'nginx/1.0.13'), ('connection', 'keep-alive'), ('x-ratelimit-limit', '5000'), ('date', 'Sat, 26 May 2012 20:23:33 GMT'), ('content-type', 'application/json; charset=utf-8')]
+{"login":"prtg-dev","id":54651306,"node_id":"MDEyOk9yZ2FuaXphdGlvbjU0NjUxMzA2","avatar_url":"https://avatars1.githubusercontent.com/u/54651306?v=4","gravatar_id":"","url":"https://api.github.com/users/prtg-dev","html_url":"https://github.com/prtg-dev","followers_url":"https://api.github.com/users/prtg-dev/followers","following_url":"https://api.github.com/users/prtg-dev/following{/other_user}","gists_url":"https://api.github.com/users/prtg-dev/gists{/gist_id}","starred_url":"https://api.github.com/users/prtg-dev/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/prtg-dev/subscriptions","organizations_url":"https://api.github.com/users/prtg-dev/orgs","repos_url":"https://api.github.com/users/prtg-dev/repos","events_url":"https://api.github.com/users/prtg-dev/events{/privacy}","received_events_url":"https://api.github.com/users/prtg-dev/received_events","type":"Organization","site_admin":false}
+
+https
+POST
+api.github.com
+None
+/repos/jacquev6/PyGithub/forks
+{'Authorization': 'Basic login_and_password_removed', 'User-Agent': 'PyGithub/Python', 'Content-Type': 'application/json'}
+{"organization": "prtg-dev"}
+202
+[('Date', 'Wed, 27 Nov 2019 23:00:13 GMT'), ('Content-Type', 'application/json; charset=utf-8'), ('Content-Length', '16034'), ('Server', 'GitHub.com'), ('Status', '202 Accepted'), ('X-RateLimit-Limit', '5000'), ('X-RateLimit-Remaining', '4932'), ('X-RateLimit-Reset', '1574899126'), ('X-OAuth-Scopes', 'repo'), ('X-Accepted-OAuth-Scopes', ''), ('X-GitHub-Media-Type', 'github.v3; format=json'), ('Access-Control-Expose-Headers', 'ETag, Link, Location, Retry-After, X-GitHub-OTP, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-OAuth-Scopes, X-Accepted-OAuth-Scopes, X-Poll-Interval, X-GitHub-Media-Type'), ('Access-Control-Allow-Origin', '*'), ('Strict-Transport-Security', 'max-age=31536000; includeSubdomains; preload'), ('X-Frame-Options', 'deny'), ('X-Content-Type-Options', 'nosniff'), ('X-XSS-Protection', '1; mode=block'), ('Referrer-Policy', 'origin-when-cross-origin, strict-origin-when-cross-origin'), ('Content-Security-Policy', "default-src 'none'"), ('X-GitHub-Request-Id', 'E2F5:3ECF:1DE67F:229B58:5DDEFFFC')]
+{"id":224531141,"node_id":"MDEwOlJlcG9zaXRvcnkyMjQ1MzExNDE=","name":"PyGithub","full_name":"prtg-dev/PyGithub","private":false,"owner":{"login":"prtg-dev","id":54651306,"node_id":"MDEyOk9yZ2FuaXphdGlvbjU0NjUxMzA2","avatar_url":"https://avatars1.githubusercontent.com/u/54651306?v=4","gravatar_id":"","url":"https://api.github.com/users/prtg-dev","html_url":"https://github.com/prtg-dev","followers_url":"https://api.github.com/users/prtg-dev/followers","following_url":"https://api.github.com/users/prtg-dev/following{/other_user}","gists_url":"https://api.github.com/users/prtg-dev/gists{/gist_id}","starred_url":"https://api.github.com/users/prtg-dev/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/prtg-dev/subscriptions","organizations_url":"https://api.github.com/users/prtg-dev/orgs","repos_url":"https://api.github.com/users/prtg-dev/repos","events_url":"https://api.github.com/users/prtg-dev/events{/privacy}","received_events_url":"https://api.github.com/users/prtg-dev/received_events","type":"Organization","site_admin":false},"html_url":"https://github.com/prtg-dev/PyGithub","description":"Typed 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diff --git a/tests/Repository.py b/tests/Repository.py
--- a/tests/Repository.py
+++ b/tests/Repository.py
@@ -753,6 +753,10 @@ def testCreateFork(self):
             self.repo.create_fork("prtg-dev").full_name, "prtg-dev/PyGithub"
         )
 
+    def testCreateForkOrg(self):
+        c = self.g.get_organization("prtg-dev")
+        self.assertEqual(self.repo.create_fork(c).full_name, "prtg-dev/PyGithub")
+
     def testGetGitRefs(self):
         self.assertListKeyEqual(
             self.repo.get_git_refs(),