From 171fd33cb657ab1d14a07e86778930dbc3d8b403 Mon Sep 17 00:00:00 2001
From: Peter Law <PeterJCLaw@gmail.com>
Date: Mon, 13 Feb 2023 19:45:11 +0000
Subject: [PATCH] Be stricter about mypy needing error codes

These make it clearer what's being ignored and harder to
accidentally ignore more than expected.
---
 parso/grammar.py         | 10 +++++-----
 parso/pgen2/generator.py |  2 +-
 setup.cfg                |  3 +++
 3 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/parso/grammar.py b/parso/grammar.py
index 43b7be94..85c65db9 100644
--- a/parso/grammar.py
+++ b/parso/grammar.py
@@ -106,14 +106,14 @@ def parse(self,
 
         if file_io is None:
             if code is None:
-                file_io = FileIO(path)  # type: ignore
+                file_io = FileIO(path)  # type: ignore[arg-type]
             else:
                 file_io = KnownContentFileIO(path, code)
 
         if cache and file_io.path is not None:
             module_node = load_module(self._hashed, file_io, cache_path=cache_path)
             if module_node is not None:
-                return module_node  # type: ignore
+                return module_node  # type: ignore[no-any-return]
 
         if code is None:
             code = file_io.read()
@@ -132,7 +132,7 @@ def parse(self,
                 module_node = module_cache_item.node
                 old_lines = module_cache_item.lines
                 if old_lines == lines:
-                    return module_node  # type: ignore
+                    return module_node  # type: ignore[no-any-return]
 
                 new_node = self._diff_parser(
                     self._pgen_grammar, self._tokenizer, module_node
@@ -144,7 +144,7 @@ def parse(self,
                                    # Never pickle in pypy, it's slow as hell.
                                    pickling=cache and not is_pypy,
                                    cache_path=cache_path)
-                return new_node  # type: ignore
+                return new_node  # type: ignore[no-any-return]
 
         tokens = self._tokenizer(lines)
 
@@ -160,7 +160,7 @@ def parse(self,
                                # Never pickle in pypy, it's slow as hell.
                                pickling=cache and not is_pypy,
                                cache_path=cache_path)
-        return root_node  # type: ignore
+        return root_node  # type: ignore[no-any-return]
 
     def _get_token_namespace(self):
         ns = self._token_namespace
diff --git a/parso/pgen2/generator.py b/parso/pgen2/generator.py
index db6e1cb3..30f0b546 100644
--- a/parso/pgen2/generator.py
+++ b/parso/pgen2/generator.py
@@ -276,7 +276,7 @@ def generate_grammar(bnf_grammar: str, token_namespace) -> Grammar:
                     dfa_state.transitions[transition] = DFAPlan(next_dfa)
 
     _calculate_tree_traversal(rule_to_dfas)
-    return Grammar(start_nonterminal, rule_to_dfas, reserved_strings)  # type: ignore
+    return Grammar(start_nonterminal, rule_to_dfas, reserved_strings)  # type: ignore[arg-type]
 
 
 def _make_transition(token_namespace, reserved_syntax_strings, label):
diff --git a/setup.cfg b/setup.cfg
index 1d077d8c..94c886cc 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -13,6 +13,9 @@ ignore =
 
 
 [mypy]
+show_error_codes = true
+enable_error_code = ignore-without-code
+
 disallow_subclassing_any = True
 
 # Avoid creating future gotchas emerging from bad typing