Remove python2 and mysql5.7 code

.github/workflows/pytest.yml

@@ -1,5 +1,5 @@
 name: PyTest
-on: [push, pull_request]
+on: [ push, pull_request ]
 env:
   PYTEST_SKIP_OPTION: "not test_no_trailing_rotate_event and not test_end_log_pos and not test_query_event_latin1"
 jobs:
@@ -8,10 +8,10 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - {name: 'CPython 3.7', python: '3.7'}
-          - {name: 'CPython 3.11', python: '3.11'}
-          - {name: 'Pypy 3.7', python: 'pypy-3.7'}
-          - {name: 'Pypy 3.9', python: 'pypy-3.9'}
+          - { name: 'CPython 3.7', python: '3.7' }
+          - { name: 'CPython 3.11', python: '3.11' }
+          - { name: 'Pypy 3.7', python: 'pypy-3.7' }
+          - { name: 'Pypy 3.9', python: 'pypy-3.9' }
     name: ${{ matrix.name }}
     runs-on: ubuntu-latest
     timeout-minutes: 3
@@ -46,14 +46,6 @@ jobs:
           pip install .
           pip install pytest
 
-      - name: Run tests for mysql-5
-        working-directory: pymysqlreplication/tests
-        run: pytest -k "$PYTEST_SKIP_OPTION" --db=mysql-5
-
-      - name: Run tests for mysql-5-ctl
-        working-directory: pymysqlreplication/tests
-        run: pytest -k "$PYTEST_SKIP_OPTION" --db=mysql-5-ctl
-
       - name: Run tests for mysql-8
         working-directory: pymysqlreplication/tests
         run: pytest -k "$PYTEST_SKIP_OPTION" --db=mysql-8

docker-compose-test.yml

@@ -21,22 +21,6 @@ x-mariadb: &mariadb
     --binlog-format=row
 
 services:
-  percona-5.7-ctl:
-    <<: *mysql
-    image: percona:5.7
-    ports:
-      - "3307:3306"
-    networks:
-      - default
-
-  percona-5.7:
-    <<: *mysql
-    image: percona:5.7
-    ports:
-      - "3306:3306"
-    networks:
-      - default
-
   percona-8.0:
     <<: *mysql
     image: percona:8.0
@@ -67,9 +51,6 @@ services:
       dockerfile: test.Dockerfile
       args:
         BASE_IMAGE: python:3.11-alpine
-        MYSQL_5_7: percona-5.7
-        MYSQL_5_7_CTL: percona-5.7-ctl
-        MYSQL_5_7_CTL_PORT: 3306
         MYSQL_8_0: percona-8.0
         MYSQL_8_0_PORT: 3306
         MARIADB_10_6: mariadb-10.6
@@ -83,7 +64,7 @@ services:
 
         while :
         do
-          if mysql -h percona-5.7 --user=root --execute "SELECT version();" 2>&1 >/dev/null && mysql -h percona-5.7-ctl --user=root --execute "SELECT version();" 2>&1 >/dev/null && mysql -h percona-8.0 --user=root --execute "SELECT version();" 2>&1 >/dev/null; then
+          if mysql -h percona-8.0 --user=root --execute "SELECT version();" 2>&1 >/dev/null; then
             break
           fi
           sleep 1
@@ -96,8 +77,6 @@ services:
     networks:
       - default
     depends_on:
-      - percona-5.7
-      - percona-5.7-ctl
       - percona-8.0
 
 networks:

docker-compose.yml

@@ -21,23 +21,17 @@ x-mariadb: &mariadb
     --binlog-format=row
 
 services:
-  percona-5.7:
+  percona-8.0:
     <<: *mysql
-    image: percona:5.7
+    image: percona:8.0
     ports:
       - "3306:3306"
 
-  percona-5.7-ctl:
-    <<: *mysql
-    image: percona:5.7
-    ports:
-      - "3307:3306"
-
-  percona-8.0:
+  percona-8.0-ctl:
     <<: *mysql
     image: percona:8.0
     ports:
-      - "3309:3306"
+      - "3307:3306"
 
   mariadb-10.6:
     <<: *mariadb

pymysqlreplication/binlogstream.py

@@ -312,7 +312,7 @@ def __checksum_enabled(self):
 
         if result is None:
             return False
-        var, value = result[:2]
+        _, value = result[:2]
         if value == "NONE":
             return False
         return True
@@ -587,7 +587,7 @@ def fetchone(self):
                 else:
                     pkt = self._stream_connection._read_packet()
             except pymysql.OperationalError as error:
-                code, message = error.args
+                code, _ = error.args
                 if code in MYSQL_EXPECTED_ERROR_CODES:
                     self._stream_connection.close()
                     self.__connected_stream = False