From a423f437ff17671d1590889f83acaef5128d809f Mon Sep 17 00:00:00 2001
From: William Andrea <22385371+wjandrea@users.noreply.github.com>
Date: Thu, 6 Feb 2025 14:07:42 -0400
Subject: [PATCH 1/2] Fix frozenset display in pprint

It needs to have braces like a set.
---
 pandas/io/formats/printing.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pandas/io/formats/printing.py b/pandas/io/formats/printing.py
index 5a52ee78cb9be..ab27321ffe83c 100644
--- a/pandas/io/formats/printing.py
+++ b/pandas/io/formats/printing.py
@@ -112,7 +112,7 @@ def _pprint_seq(
     if isinstance(seq, set):
         fmt = "{{{body}}}"
     elif isinstance(seq, frozenset):
-        fmt = "frozenset({body})"
+        fmt = "frozenset({{{body}}})"
     else:
         fmt = "[{body}]" if hasattr(seq, "__setitem__") else "({body})"
 

From b41057144df1dd68f365fe05dd514285999cc6b7 Mon Sep 17 00:00:00 2001
From: William Andrea <22385371+wjandrea@users.noreply.github.com>
Date: Thu, 6 Feb 2025 14:09:49 -0400
Subject: [PATCH 2/2] Fix frozenset pprint test

---
 pandas/tests/io/formats/test_printing.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pandas/tests/io/formats/test_printing.py b/pandas/tests/io/formats/test_printing.py
index f86b4af2647f8..7d154235d2c4a 100644
--- a/pandas/tests/io/formats/test_printing.py
+++ b/pandas/tests/io/formats/test_printing.py
@@ -83,7 +83,7 @@ def test_repr_mapping(self):
         assert printing.pprint_thing(MyMapping()) == "{'a': 4, 'b': 4}"
 
     def test_repr_frozenset(self):
-        assert printing.pprint_thing(frozenset([1, 2])) == "frozenset(1, 2)"
+        assert printing.pprint_thing(frozenset([1, 2])) == "frozenset({1, 2})"
 
 
 class TestFormatBase: