Fix issue with NO_COLOR, add test for Console with no file

rich/console.py

@@ -701,7 +701,14 @@ class Console:
         if force_terminal is not None:
             self._force_terminal = force_terminal
         else:
-            self._force_terminal = self._environ.get("FORCE_COLOR") is not None
+            # If FORCE_COLOR env var has any value at all, we force terminal.
+            force_terminal = self._environ.get("FORCE_COLOR")
+            if force_terminal is not None:
+                self._force_terminal = bool(force_terminal)
+            else:
+                self._force_terminal = None
+
+        print(self._force_terminal)
 
         self._file = file
         self.quiet = quiet

tests/test_console.py

@@ -5,6 +5,7 @@ import sys
 import tempfile
 from typing import Optional, Tuple, Type, Union
 from unittest import mock
+from unittest.mock import PropertyMock
 
 import pytest
 
@@ -897,6 +898,19 @@ def test_render_lines_height_minus_vertical_pad_is_negative():
     console.render_lines(Padding("hello", pad=(1, 0)), options=options)
 
 
+def test_no_stdout_file():
+    # Rich should work even if there's no file available to write to.
+    # For example, pythonw nullifies output streams.
+    # Built-in print silently no-ops in pythonw.
+    # Related: https://github.com/Textualize/rich/issues/2400
+    console = Console()
+    with mock.patch.object(
+        Console, "file", new_callable=PropertyMock
+    ) as mock_file_property:
+        mock_file_property.return_value = None
+        console.print("hello world")
+
+
 @mock.patch.dict(os.environ, {"FORCE_COLOR": "anything"})
 def test_force_color():
     # Even though we use a non-tty file, the presence of FORCE_COLOR env var