From dc1bf3cff6b2f696f3904db355ade3d70aa6c009 Mon Sep 17 00:00:00 2001
From: Aryaz Eghbali <64126826+AryazE@users.noreply.github.com>
Date: Thu, 7 Nov 2024 18:24:38 +0100
Subject: [PATCH] =?UTF-8?q?=F0=9F=90=9B=20Fix=20equality=20check=20for=20c?=
 =?UTF-8?q?ustom=20classes=20(#979)?=
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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Sofie Van Landeghem <svlandeg@users.noreply.github.com>
Co-authored-by: svlandeg <svlandeg@github.com>
Co-authored-by: Sebastián Ramírez <tiangolo@gmail.com>
---
 tests/test_param_meta_empty.py | 36 ++++++++++++++++++++++++++++++++++
 typer/main.py                  |  4 ++--
 2 files changed, 38 insertions(+), 2 deletions(-)
 create mode 100644 tests/test_param_meta_empty.py

diff --git a/tests/test_param_meta_empty.py b/tests/test_param_meta_empty.py
new file mode 100644
index 0000000000..49f94dd3b4
--- /dev/null
+++ b/tests/test_param_meta_empty.py
@@ -0,0 +1,36 @@
+import typer
+from typer.testing import CliRunner
+
+runner = CliRunner()
+
+
+def test_default_with_class_with_custom_eq():
+    app = typer.Typer()
+
+    from typer.models import ParamMeta
+
+    class StupidClass:
+        def __init__(self, a):
+            self.a = a
+
+        def __eq__(self, other) -> bool:
+            if other is ParamMeta.empty:
+                return True
+            try:
+                return self.a == other.a
+            except Exception:
+                return False
+
+        def __ne__(self, other: object) -> bool:
+            return not self.__eq__(other)
+
+    @app.command()
+    def cmd(val=StupidClass(42)):
+        print(val)
+
+    assert StupidClass(666) == ParamMeta.empty
+    assert StupidClass(666) != StupidClass(1)
+
+    result = runner.invoke(app)
+    assert result.exit_code == 0, result.output
+    assert "StupidClass" in result.output
diff --git a/typer/main.py b/typer/main.py
index 0b1837389f..e12cec0f99 100644
--- a/typer/main.py
+++ b/typer/main.py
@@ -821,14 +821,14 @@ def get_click_param(
             required = True
         else:
             default_value = parameter_info.default
-    elif param.default == Required or param.default == param.empty:
+    elif param.default == Required or param.default is param.empty:
         required = True
         parameter_info = ArgumentInfo()
     else:
         default_value = param.default
         parameter_info = OptionInfo()
     annotation: Any
-    if not param.annotation == param.empty:
+    if param.annotation is not param.empty:
         annotation = param.annotation
     else:
         annotation = str