1 files changed, 58 insertions, 0 deletions
diff --git a/pylint/extensions/empty_comment.py b/pylint/extensions/empty_comment.py
new file mode 100644
index 000000000..7b9841678
--- /dev/null
+++ b/pylint/extensions/empty_comment.py
@@ -0,0 +1,58 @@
+from astroid import nodes
+
+from pylint.checkers import BaseChecker
+from pylint.interfaces import IRawChecker
+
+
+def is_line_commented(line):
+    """Checks if a `# symbol that is not part of a string was found in line"""
+
+    comment_idx = line.find(b"#")
+    if comment_idx == -1:
+        return False
+    if comment_part_of_string(line, comment_idx):
+        return is_line_commented(line[:comment_idx] + line[comment_idx + 1 :])
+    return True
+
+
+def comment_part_of_string(line, comment_idx):
+    """checks if the symbol at comment_idx is part of a string"""
+
+    if (
+        line[:comment_idx].count(b"'") % 2 == 1
+        and line[comment_idx:].count(b"'") % 2 == 1
+    ) or (
+        line[:comment_idx].count(b'"') % 2 == 1
+        and line[comment_idx:].count(b'"') % 2 == 1
+    ):
+        return True
+    return False
+
+
+class CommentChecker(BaseChecker):
+    __implements__ = IRawChecker
+
+    name = "refactoring"
+    msgs = {
+        "R2044": (
+            "Line with empty comment",
+            "empty-comment",
+            (
+                "Used when a # symbol appears on a line not followed by an actual comment"
+            ),
+        )
+    }
+    options = ()
+    priority = -1  # low priority
+
+    def process_module(self, node: nodes.Module) -> None:
+        with node.stream() as stream:
+            for (line_num, line) in enumerate(stream):
+                line = line.rstrip()
+                if line.endswith(b"#"):
+                    if not is_line_commented(line[:-1]):
+                        self.add_message("empty-comment", line=line_num + 1)
+
+
+def register(linter):
+    linter.register_checker(CommentChecker(linter))