[py]: replace platform.system() with sys.platform

py/conftest.py

@@ -16,7 +16,7 @@
 # under the License.
 
 import os
-import platform
+import sys
 from dataclasses import dataclass
 from pathlib import Path
 
@@ -182,7 +182,14 @@ def driver_class(self, cls_name):
 
     @property
     def exe_platform(self):
-        return platform.system()
+        if sys.platform == "win32":
+            return "Windows"
+        elif sys.platform == "darwin":
+            return "Darwin"
+        elif sys.platform == "linux":
+            return "Linux"
+        else:
+            return sys.platform.title()
 
     @property
     def browser_path(self):
@@ -397,7 +404,7 @@ def server(request):
     )
 
     remote_env = os.environ.copy()
-    if platform.system() == "Linux":
+    if sys.platform == "linux":
         # There are issues with window size/position when running Firefox
         # under Wayland, so we use XWayland instead.
         remote_env["MOZ_ENABLE_WAYLAND"] = "0"

py/selenium/webdriver/common/service.py

@@ -19,10 +19,10 @@
 import logging
 import os
 import subprocess
+import sys
 from abc import ABC, abstractmethod
 from collections.abc import Mapping
 from io import IOBase
-from platform import system
 from subprocess import PIPE
 from time import sleep
 from typing import IO, Any, Optional, Union, cast
@@ -205,13 +205,13 @@ def _start_process(self, path: str) -> None:
         """
         cmd = [path]
         cmd.extend(self.command_line_args())
-        close_file_descriptors = self.popen_kw.pop("close_fds", system() != "Windows")
+        close_file_descriptors = self.popen_kw.pop("close_fds", sys.platform != "win32")
         try:
             start_info = None
-            if system() == "Windows":
-                start_info = subprocess.STARTUPINFO()  # type: ignore[attr-defined]
-                start_info.dwFlags = subprocess.CREATE_NEW_CONSOLE | subprocess.STARTF_USESHOWWINDOW  # type: ignore[attr-defined]
-                start_info.wShowWindow = subprocess.SW_HIDE  # type: ignore[attr-defined]
+            if sys.platform == "win32":
+                start_info = subprocess.STARTUPINFO()
+                start_info.dwFlags = subprocess.CREATE_NEW_CONSOLE | subprocess.STARTF_USESHOWWINDOW
+                start_info.wShowWindow = subprocess.SW_HIDE
 
             self.process = subprocess.Popen(
                 cmd,

py/selenium/webdriver/firefox/firefox_binary.py

@@ -17,8 +17,8 @@
 
 
 import os
+import sys
 import time
-from platform import system
 from subprocess import DEVNULL, STDOUT, Popen
 
 from typing_extensions import deprecated
@@ -45,7 +45,7 @@ def __init__(self, firefox_path=None, log_file=None):
         # a while the pipe would fill up and Firefox would freeze.
         self._log_file = log_file or DEVNULL
         self.command_line = None
-        self.platform = system().lower()
+        self.platform = sys.platform
         if not self._start_cmd:
             self._start_cmd = self._get_firefox_start_cmd()
         if not self._start_cmd.strip():

py/selenium/webdriver/remote/remote_connection.py

@@ -16,8 +16,8 @@
 # under the License.
 
 import logging
-import platform
 import string
+import sys
 import warnings
 from base64 import b64encode
 from typing import Optional
@@ -156,7 +156,7 @@ class RemoteConnection:
     _ca_certs = os.getenv("REQUESTS_CA_BUNDLE") if "REQUESTS_CA_BUNDLE" in os.environ else certifi.where()
     _client_config: Optional[ClientConfig] = None
 
-    system = platform.system().lower()
+    system = sys.platform
     if system == "darwin":
         system = "mac"
 

py/test/selenium/webdriver/firefox/firefox_sizing_tests.py

@@ -16,7 +16,7 @@
 # under the License.
 
 import os
-import platform
+import sys
 from unittest.mock import patch
 
 import pytest
@@ -25,7 +25,7 @@
 
 
 def is_running_wayland():
-    return platform.system() == "Linux" and os.getenv("WAYLAND_DISPLAY")
+    return sys.platform == "linux" and os.getenv("WAYLAND_DISPLAY")
 
 
 @pytest.mark.skipif(not is_running_wayland(), reason="This test only runs on Linux under Wayland")

py/test/unit/selenium/webdriver/chrome/chrome_options_tests.py

@@ -14,7 +14,7 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-import platform
+import sys
 from os import path
 
 import pytest
@@ -91,7 +91,7 @@ def test_add_encoded_extension(options):
 
 
 def test_get_extensions_from_extension_files(options, mocker):
-    null = "NUL" if platform.system().lower() == "windows" else "/dev/null"
+    null = "NUL" if sys.platform == "win32" else "/dev/null"
     mocker.patch("selenium.webdriver.chromium.options.open").return_value = open(null)
     mocker.patch("base64.b64encode").return_value = b"foo"
     options._extension_files = ["foo"]