Added a new command line option ``list-groups`` for listing all the check groups ``pylint`` knows about.

3 files changed, 33 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 44aa9091b..a6e92bbd9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -7,6 +7,8 @@ What's New in Pylint 2.3.0?
 
 Release date: TBA
 
+* Added a new command line option ``list-groups`` for listing all the check groups ``pylint`` knows about.
+
 * Allow ``BaseException`` for emitting ``broad-except``, just like ``Exception``.
 
   Close #2741
diff --git a/doc/whatsnew/2.3.rst b/doc/whatsnew/2.3.rst
index f60b74cfc..1f3cbc9ff 100644
--- a/doc/whatsnew/2.3.rst
+++ b/doc/whatsnew/2.3.rst
@@ -27,7 +27,6 @@ New checkers
 
   Closes #2558
 
-
 * We added a new option ``check-str-concat-over-line-jumps`` to check
   ``implicit-str-concat-in-sequence`` over multiple lines.
 
@@ -62,3 +61,7 @@ Quite a lot of bug fixes and improvements went into this release:
 * Plugins can now use the ``load_configuration()`` hook.
   This hook is executed after configuration is loaded to prevent overwriting plugin
   specific configuration via user-based configuration.
+
+* There's a new command line option ``list-groups`` for listing all the check groups
+  ``pylint`` knows about. This is useful to know what groups you can disable or enable
+  individually.
diff --git a/pylint/lint.py b/pylint/lint.py
index 26d79abd7..017c68547 100644
--- a/pylint/lint.py
+++ b/pylint/lint.py
@@ -878,6 +878,11 @@ class PyLinter(
             if c is not self
         ]
 
+    def get_checker_names(self):
+        """Get all the checker names that this linter knows about."""
+        checkers = self.get_checkers()
+        return sorted({check.name for check in checkers if check.name != "master"})
+
     def prepare_checkers(self):
         """return checkers needed for activated messages and reports"""
         if not self.config.reports:
@@ -1435,6 +1440,17 @@ group are mutually exclusive.",
                     },
                 ),
                 (
+                    "list-groups",
+                    {
+                        "action": "callback",
+                        "metavar": "<msg-id>",
+                        "callback": self.cb_list_groups,
+                        "group": "Commands",
+                        "level": 1,
+                        "help": "List pylint's message groups.",
+                    },
+                ),
+                (
                     "list-conf-levels",
                     {
                         "action": "callback",
@@ -1660,6 +1676,17 @@ group are mutually exclusive.",
         self.linter.msgs_store.list_messages()
         sys.exit(0)
 
+    def cb_list_groups(self, *args, **kwargs):
+        """List all the check groups that pylint knows about
+
+        These should be useful to know what check groups someone can disable
+        or enable.
+        """
+        checkers = self.linter.get_checker_names()
+        for check in checkers:
+            print(check)
+        sys.exit(0)
+
     def cb_python3_porting_mode(self, *args, **kwargs):
         """Activate only the python3 porting checker."""
         self.linter.python3_porting_mode()