From 7092f3bb40eaa0fef16a9d24be376f23c9bd832b Mon Sep 17 00:00:00 2001
From: Dean MacGregor <powertrading121@gmail.com>
Date: Thu, 19 Sep 2024 14:58:54 -0400
Subject: [PATCH] empty_json_to_empty_df

---
 crates/polars-io/src/json/mod.rs     |  9 ++++++++-
 py-polars/tests/unit/io/test_json.py | 10 ++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/crates/polars-io/src/json/mod.rs b/crates/polars-io/src/json/mod.rs
index f58a9010ac25..93e40993206b 100644
--- a/crates/polars-io/src/json/mod.rs
+++ b/crates/polars-io/src/json/mod.rs
@@ -281,7 +281,14 @@ where
                 } else {
                     simd_json::to_borrowed_value(owned).map_err(to_compute_err)?
                 };
-
+                match &json_value {
+                    BorrowedValue::Array(array) => {
+                        if array.is_empty() {
+                            return Ok(DataFrame::empty());
+                        }
+                    },
+                    _ => {},
+                }
                 // struct type
                 let dtype = if let Some(mut schema) = self.schema {
                     if let Some(overwrite) = self.schema_overwrite {
diff --git a/py-polars/tests/unit/io/test_json.py b/py-polars/tests/unit/io/test_json.py
index 4e24cf3b08cd..bc32bc93f814 100644
--- a/py-polars/tests/unit/io/test_json.py
+++ b/py-polars/tests/unit/io/test_json.py
@@ -420,3 +420,13 @@ def test_compressed_json() -> None:
     uncompressed = io.BytesIO(json_bytes)
     out = pl.read_json(uncompressed)
     assert_frame_equal(out, expected)
+
+
+def test_empty_list_json() -> None:
+    df = pl.read_json(io.StringIO("[]"))
+    assert df.shape == (0, 0)
+    assert isinstance(df, pl.DataFrame)
+
+    df = pl.read_json(b"[]")
+    assert df.shape == (0, 0)
+    assert isinstance(df, pl.DataFrame)