Fix compatibility with python3.7 and a few linter things

mcstatus/protocol/connection.py

@@ -1,5 +1,13 @@
 from abc import abstractmethod, ABC
-from typing import SupportsBytes, Iterable, SupportsIndex, Union
+
+try:
+    from typing import SupportsBytes, Iterable, SupportsIndex, Tuple, Union
+
+    BytesConvertable = Union[SupportsIndex, Iterable[SupportsIndex]]
+except ImportError:
+    from typing import SupportsBytes, Iterable, Tuple, Union
+
+    BytesConvertable = Union[int, Iterable[int]]
 import socket
 import struct
 import asyncio
@@ -10,8 +18,6 @@ from ctypes import c_int32 as signed_int32
 
 from ..scripts.address_tools import ip_type
 
-BytesConvertable = Union[SupportsIndex, Iterable[SupportsIndex]]
-
 
 class Connection:
     def __init__(self):
@@ -108,7 +114,7 @@ class Connection:
     def read_uint(self) -> int:
         return self._unpack("I", self.read(4))
 
-    def write_uint(self, value:  int) -> None:
+    def write_uint(self, value: int) -> None:
         self.write(self._pack("I", value))
 
     def read_long(self) -> int:
@@ -185,7 +191,7 @@ class AsyncReadConnection(Connection, ABC):
 
 
 class TCPSocketConnection(Connection):
-    def __init__(self, addr: tuple[str, int], timeout: float = 3):
+    def __init__(self, addr: Tuple[str, int], timeout: float = 3):
         Connection.__init__(self)
         self.socket = socket.create_connection(addr, timeout=timeout)
         self.socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
@@ -219,7 +225,7 @@ class TCPSocketConnection(Connection):
 
 
 class UDPSocketConnection(Connection):
-    def __init__(self, addr: tuple[str, int], timeout: float = 3):
+    def __init__(self, addr: Tuple[str, int], timeout: float = 3):
         Connection.__init__(self)
         self.addr = addr
         self.socket = socket.socket(
@@ -264,7 +270,7 @@ class TCPAsyncSocketConnection(AsyncReadConnection):
     def __init__(self):
         super().__init__()
 
-    async def connect(self, addr: tuple[str, int], timeout: float = 3):
+    async def connect(self, addr: Tuple[str, int], timeout: float = 3):
         self.timeout = timeout
         conn = asyncio.open_connection(addr[0], addr[1])
         self.reader, self.writer = await asyncio.wait_for(conn, timeout=self.timeout)
@@ -296,7 +302,7 @@ class UDPAsyncSocketConnection(AsyncReadConnection):
     def __init__(self):
         super().__init__()
 
-    async def connect(self, addr: tuple[str, int], timeout: float = 3):
+    async def connect(self, addr: Tuple[str, int], timeout: float = 3):
         self.timeout = timeout
         conn = asyncio_dgram.connect((addr[0], addr[1]))
         self.stream = await asyncio.wait_for(conn, timeout=self.timeout)

mcstatus/tests/protocol/test_connection.py

@@ -276,5 +276,5 @@ class UDPSocketConnectionTest:
 
         self.connection.socket.sendto.assert_called_once_with(  # type: ignore[attr-defined]
             bytearray.fromhex("7FAA"),
-            ("localhost", 1234)
+            ("localhost", 1234),
         )

mcstatus/tests/test_async_support.py

@@ -11,7 +11,7 @@ def test_is_completely_asynchronous():
     assertions = 0
     for attribute in dir(conn):
         if attribute.startswith("read_"):
-            assert iscoroutinefunction(conn.__getattribute__(attribute))
+            assert iscoroutinefunction(getattr(conn, attribute))
             assertions += 1
     assert assertions > 0, "None of the read_* attributes were async"
 
@@ -21,6 +21,6 @@ def test_query_is_completely_asynchronous():
     assertions = 0
     for attribute in dir(conn):
         if attribute.startswith("read_"):
-            assert iscoroutinefunction(conn.__getattribute__(attribute))
+            assert iscoroutinefunction(getattr(conn, attribute))
             assertions += 1
     assert assertions > 0, "None of the read_* attributes were async"