It seems like Mypy specific handling of class scopes, fixes #5

Author: davidhalter

crates/zuban_python/src/type_helpers/class.rs

@@ -1416,17 +1416,15 @@ impl<'db: 'a, 'a> Class<'a> {
             .get(class_block.index())
             .calculated()
         {
-            if !db.project.settings.mypy_compatible {
-                let result = self.file.ensure_module_symbols_flow_analysis(db);
-                if result.is_err() {
-                    debug!(
-                        "Wanted to calculate class {:?} diagnostics, but could not calculated file {}",
-                        self.name(),
-                        self.file.qualified_name(db)
-                    );
-                }
-                result?;
+            let result = self.file.ensure_module_symbols_flow_analysis(db);
+            if result.is_err() {
+                debug!(
+                    "Wanted to calculate class {:?} diagnostics, but could not calculated file {}",
+                    self.name(),
+                    self.file.qualified_name(db)
+                );
             }
+            result?;
             let result = FLOW_ANALYSIS.with(|fa| {
                 fa.with_new_empty_and_delay_further(db, || {
                     self.file

crates/zuban_python/tests/mypylike/tests/flow-analysis.test

@@ -546,3 +546,15 @@ def test_func():
             offset = data["next"]
         else:
             break
+
+[case file_flow_analysis]
+from h import H
+
+def blubb(self, h: H):
+    h.asdf
+
+[file h.py]
+x = undefined  # E: Name "undefined" is not defined
+
+class H:
+    asdf = x