Fix autodoc: autodoc_member_order_does not refer order of imports (refs: #6574)

CHANGES

@@ -46,6 +46,8 @@ Bugs fixed
 * #6486: UnboundLocalError is raised if broken extension installed
 * #6567: autodoc: :confval:`autodoc_inherit_docstrings` does not effect to
   ``__init__()`` and ``__new__()``
+* #6574: autodoc: :confval:`autodoc_member_order` does not refer order of
+  imports when ``'bysource'`` order
 * #6498: autosummary: crashed with wrong autosummary_generate setting
 * #6507: autosummary: crashes without no autosummary_generate setting
 * #6511: LaTeX: autonumbered list can not be customized in LaTeX

sphinx/pycode/parser.py

@@ -270,6 +270,22 @@ class VariableCommentPicker(ast.NodeVisitor):
         super().visit(node)
         self.previous = node
 
+    def visit_Import(self, node: ast.Import) -> None:
+        """Handles Import node and record it to definition orders."""
+        for name in node.names:
+            if name.asname:
+                self.add_entry(name.asname)
+            else:
+                self.add_entry(name.name)
+
+    def visit_ImportFrom(self, node: ast.Import) -> None:
+        """Handles Import node and record it to definition orders."""
+        for name in node.names:
+            if name.asname:
+                self.add_entry(name.asname)
+            else:
+                self.add_entry(name.name)
+
     def visit_Assign(self, node: ast.Assign) -> None:
         """Handles Assign node and pick up a variable comment."""
         try:

tests/test_pycode_parser.py

@@ -344,6 +344,22 @@ def test_async_function_and_method():
                                   'Foo.method': ('def', 6, 7)}
 
 
+def test_imports():
+    source = ('import sys\n'
+              'from os import environment, path\n'
+              '\n'
+              'import sphinx as Sphinx\n'
+              'from sphinx.application import Sphinx as App\n')
+    parser = Parser(source)
+    parser.parse()
+    assert parser.definitions == {}
+    assert parser.deforders == {'sys': 0,
+                                'environment': 1,
+                                'path': 2,
+                                'Sphinx': 3,
+                                'App': 4}
+
+
 def test_formfeed_char():
     source = ('class Foo:\n'
               '\f\n'