Jacob Hallen cornered me here at EuroPython and got me to look at

patch:

[ 750008 ] 'compiler' module bug with 'import foo.bar as baz'

which I'm now checking in.

after import foo.bar as baz, baz would refer to foo.

Lib/compiler/pycodegen.py

@@ -761,7 +761,11 @@ def visitImport(self, node):
                 self.emit('LOAD_CONST', None)
             self.emit('IMPORT_NAME', name)
             mod = name.split(".")[0]
-            self.storeName(alias or mod)
+            if alias:
+                self._resolveDots(name)
+                self.storeName(alias)
+            else:
+                self.storeName(mod)
 
     def visitFrom(self, node):
         self.set_lineno(node)