From 93a4ec55db65aeaa1a60d43c1c5f542fe1a0a3f6 Mon Sep 17 00:00:00 2001
From: Miguel Monteiro <mab.mtr@gmail.com>
Date: Sun, 6 Oct 2024 16:54:16 +0000
Subject: [PATCH 1/3] fix: empty tuples are correctly parsed

---
 jsonargparse/_typehints.py           | 2 +-
 jsonargparse_tests/test_typehints.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/jsonargparse/_typehints.py b/jsonargparse/_typehints.py
index 445026c3..ab86635f 100644
--- a/jsonargparse/_typehints.py
+++ b/jsonargparse/_typehints.py
@@ -848,7 +848,7 @@ def adapt_typehints(
                 subtypehint = subtypehints[0 if is_ellipsis or not is_tuple else n]
                 val[n] = adapt_typehints(v, subtypehint, **adapt_kwargs)
             if is_tuple and len(val) == 0:
-                raise_unexpected_value("Expected a non-empty tuple", val)
+                val = ()
         if not serialize:
             val = tuple(val) if typehint_origin in {Tuple, tuple} else set(val)
 
diff --git a/jsonargparse_tests/test_typehints.py b/jsonargparse_tests/test_typehints.py
index 86c83749..21bf766d 100644
--- a/jsonargparse_tests/test_typehints.py
+++ b/jsonargparse_tests/test_typehints.py
@@ -286,7 +286,7 @@ def test_tuple_ellipsis(parser):
     parser.add_argument("--tuple", type=Tuple[float, ...])
     assert (1.2,) == parser.parse_args(["--tuple=[1.2]"]).tuple
     assert (1.2, 3.4) == parser.parse_args(["--tuple=[1.2, 3.4]"]).tuple
-    pytest.raises(ArgumentError, lambda: parser.parse_args(["--tuple=[]"]))
+    assert () == parser.parse_args(["--tuple=[]"]).tuple
     pytest.raises(ArgumentError, lambda: parser.parse_args(['--tuple=[2, "a"]']))
 
 

From dc54d5b84b25d60b9952773bdfa4eb3e998f47d2 Mon Sep 17 00:00:00 2001
From: Miguel Monteiro <mab.mtr@gmail.com>
Date: Wed, 9 Oct 2024 14:43:22 +0000
Subject: [PATCH 2/3] fix: empty tuples are now parsed correctly

---
 CHANGELOG.rst              | 10 ++++++++++
 jsonargparse/_typehints.py |  2 --
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 7aebe336..a9883b10 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -12,6 +12,16 @@ The semantic versioning only considers the public API as described in
 paths are considered internals and can change in minor and patch releases.
 
 
+v4.33.2 (2024-10-09)
+--------------------
+
+Fixed
+^^^^^
+- Empty tuples are now parsed correctly instead of raising an error.
+  (`#592 <https://github.com/omni-us/jsonargparse/pull/592`__).
+
+
+
 v4.33.1 (2024-09-26)
 --------------------
 
diff --git a/jsonargparse/_typehints.py b/jsonargparse/_typehints.py
index ab86635f..b0e4811a 100644
--- a/jsonargparse/_typehints.py
+++ b/jsonargparse/_typehints.py
@@ -847,8 +847,6 @@ def adapt_typehints(
             for n, v in enumerate(val):
                 subtypehint = subtypehints[0 if is_ellipsis or not is_tuple else n]
                 val[n] = adapt_typehints(v, subtypehint, **adapt_kwargs)
-            if is_tuple and len(val) == 0:
-                val = ()
         if not serialize:
             val = tuple(val) if typehint_origin in {Tuple, tuple} else set(val)
 

From 5a7d9987a29ca114a04eae04b2fbdac0f859f530 Mon Sep 17 00:00:00 2001
From: Mauricio Villegas <5780272+mauvilsa@users.noreply.github.com>
Date: Wed, 9 Oct 2024 17:21:30 +0200
Subject: [PATCH 3/3] Update CHANGELOG.rst

---
 CHANGELOG.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 770d59d6..ade9d057 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -12,7 +12,7 @@ The semantic versioning only considers the public API as described in
 paths are considered internals and can change in minor and patch releases.
 
 
-v4.33.3 (2024-10-09)
+v4.33.3 (2024-10-??)
 --------------------
 
 Fixed