From b48b5500593810cfad801d976d814df5b07f508c Mon Sep 17 00:00:00 2001
From: apalala <apalala@gmail.com>
Date: Fri, 13 Oct 2023 12:26:08 -0400
Subject: [PATCH] [lint] solve linter and mypy warnings

---
 mypy.ini                        | 2 +-
 tatsu/bootstrap.py              | 1 -
 tatsu/codegen/python.py         | 1 -
 test/grammar/alerts_test.py     | 2 +-
 test/grammar/constants_test.py  | 6 +++---
 test/grammar/defines_test.py    | 4 ++--
 test/grammar/keyword_test.py    | 2 +-
 test/parser_equivalence_test.py | 6 +++---
 8 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/mypy.ini b/mypy.ini
index 0dacb264..aa219d82 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -1,4 +1,4 @@
 [mypy]
-python_version = 3.9
+python_version = 3.12
 ignore_missing_imports = True
 exclude = parsers|docs|build|tmp
diff --git a/tatsu/bootstrap.py b/tatsu/bootstrap.py
index 5bcc3682..e4dce249 100644
--- a/tatsu/bootstrap.py
+++ b/tatsu/bootstrap.py
@@ -11,7 +11,6 @@
 
 import sys
 
-from tatsu.buffering import Buffer
 from tatsu.parsing import Parser
 from tatsu.parsing import tatsumasu
 from tatsu.parsing import leftrec, nomemo, isname # noqa
diff --git a/tatsu/codegen/python.py b/tatsu/codegen/python.py
index 3f35c9b7..31d57264 100755
--- a/tatsu/codegen/python.py
+++ b/tatsu/codegen/python.py
@@ -519,7 +519,6 @@ def {name}(self, ast):  # noqa
 
                 import sys
 
-                from tatsu.buffering import Buffer
                 from tatsu.parsing import Parser
                 from tatsu.parsing import tatsumasu
                 from tatsu.parsing import leftrec, nomemo, isname # noqa
diff --git a/test/grammar/alerts_test.py b/test/grammar/alerts_test.py
index 636ad335..263711df 100644
--- a/test/grammar/alerts_test.py
+++ b/test/grammar/alerts_test.py
@@ -5,7 +5,7 @@
 
 def test_alert_interpolation():
     input = '42 69'
-    grammar = '''
+    grammar = r'''
             start = a:number b: number i:^`"seen: {a}, {b}"` $ ;
             number = /\d+/ ;
     '''
diff --git a/test/grammar/constants_test.py b/test/grammar/constants_test.py
index 4ed37b70..5e416861 100644
--- a/test/grammar/constants_test.py
+++ b/test/grammar/constants_test.py
@@ -5,7 +5,7 @@
 
 def test_constant_interpolation():
     input = '42 69'
-    grammar = '''
+    grammar = r'''
             start = a:number b: number i:`"seen: {a}, {b}"` $ ;
             number = /\d+/ ;
     '''
@@ -14,7 +14,7 @@ def test_constant_interpolation():
 
 def test_constant_interpolation_free():
     input = '42 69'
-    grammar = '''
+    grammar = r'''
             start = a:number b: number i:`seen: {a}, {b}` $ ;
             number = /\d+/ ;
     '''
@@ -23,7 +23,7 @@ def test_constant_interpolation_free():
 
 def test_constant_interpolation_multiline():
     input = '42 69'
-    grammar = '''
+    grammar = r'''
             start = a:number b: number
             i:```
             seen:
diff --git a/test/grammar/defines_test.py b/test/grammar/defines_test.py
index 90d0f3f0..8ba60a21 100644
--- a/test/grammar/defines_test.py
+++ b/test/grammar/defines_test.py
@@ -6,7 +6,7 @@
 
 
 def test_name_in_option():
-    grammar = '''
+    grammar = r'''
         start = expr_range ;
 
         expr_range =
@@ -41,7 +41,7 @@ def test_name_in_option():
 
 
 def test_by_option():
-    grammar = '''
+    grammar = r'''
         start = expr_range ;
 
         expr_range =
diff --git a/test/grammar/keyword_test.py b/test/grammar/keyword_test.py
index 86ae1aa7..6dab2732 100644
--- a/test/grammar/keyword_test.py
+++ b/test/grammar/keyword_test.py
@@ -127,7 +127,7 @@ def test_sparse_keywords(self):
                 self.assertTrue('"%s" is a reserved word' % k in str(e))
 
     def test_ignorecase_keywords(self):
-        grammar = '''
+        grammar = r'''
             @@ignorecase :: True
             @@keyword :: if
 
diff --git a/test/parser_equivalence_test.py b/test/parser_equivalence_test.py
index 5c6bcdf0..b6fa285c 100644
--- a/test/parser_equivalence_test.py
+++ b/test/parser_equivalence_test.py
@@ -10,7 +10,7 @@
 """
 OUTPUT = {'number_of_dice': '1', 'sides': '3'}
 
-GRAMMAR = """
+GRAMMAR = r"""
     start = expression $;
 
     int = /-?\d+/ ;
@@ -82,7 +82,7 @@ def test_error_messages():
 
 # @pytest.mark.skip('work in progress')
 def test_name_checked():
-    grammar = '''
+    grammar = r'''
         @@grammar :: Test
         @@ignorecase :: True
         @@keyword :: if
@@ -123,7 +123,7 @@ def test_first_rule():
 
 
 def test_dynamic_compiled_ast():
-    grammar = '''
+    grammar = r'''
         test::Test = 'TEST' ['A' a:number] ['B' b:number] ;
         number::int = /\d+/ ;
     '''