From 4848aca7e057b2c0237745e8b85c2e33884981c5 Mon Sep 17 00:00:00 2001
From: sahithyaravi1493 <sahithyaravi1493@gmail.com>
Date: Thu, 6 Aug 2020 12:25:55 +0200
Subject: [PATCH 1/3] fix edit api

---
 openml/datasets/functions.py | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/openml/datasets/functions.py b/openml/datasets/functions.py
index 4446f0e90..bda02d419 100644
--- a/openml/datasets/functions.py
+++ b/openml/datasets/functions.py
@@ -891,10 +891,18 @@ def edit_dataset(
         ]
     ):
         logger.warning("Creating a new version of dataset, cannot edit existing version")
+
+        # Get old dataset and features
         dataset = get_dataset(data_id)
+        df, y, categorical, attribute_names = dataset.get_data(dataset_format="dataframe")
+        attributes_old = attributes_arff_from_df(df)
 
-        decoded_arff = dataset._get_arff(format="arff")
-        data_old = decoded_arff["data"]
+        # Sparse data needs to be provided in a different format from dense data
+        if dataset.format == "sparse_arff":
+            df, y, categorical, attribute_names = dataset.get_data(dataset_format="array")
+            data_old = coo_matrix(df)
+        else:
+            data_old = df
         data_new = data if data is not None else data_old
         dataset_new = create_dataset(
             name=dataset.name,
@@ -904,7 +912,7 @@ def edit_dataset(
             collection_date=collection_date or dataset.collection_date,
             language=language or dataset.language,
             licence=dataset.licence,
-            attributes=attributes or decoded_arff["attributes"],
+            attributes=attributes or attributes_old,
             data=data_new,
             default_target_attribute=default_target_attribute or dataset.default_target_attribute,
             ignore_attribute=ignore_attribute or dataset.ignore_attribute,

From 953d975c4989a6eab2dcd1bc4e378e7fed402a5a Mon Sep 17 00:00:00 2001
From: sahithyaravi1493 <sahithyaravi1493@gmail.com>
Date: Thu, 6 Aug 2020 12:26:37 +0200
Subject: [PATCH 2/3] progress

---
 doc/progress.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/doc/progress.rst b/doc/progress.rst
index ef5ed6bae..48b2bd858 100644
--- a/doc/progress.rst
+++ b/doc/progress.rst
@@ -8,6 +8,7 @@ Changelog
 
 0.11.0
 ~~~~~~
+* ADD #929: Fix data edit API
 * ADD #929: Add data edit API
 * FIX #873: Fixes an issue which resulted in incorrect URLs when printing OpenML objects after
   switching the server.

From 991f6ef16f50c5a9e49bc6ef4c3c86665ec6d0f6 Mon Sep 17 00:00:00 2001
From: Sahithya Ravi <44670788+sahithyaravi1493@users.noreply.github.com>
Date: Thu, 6 Aug 2020 14:27:36 +0200
Subject: [PATCH 3/3] Update progress.rst

---
 doc/progress.rst | 1 -
 1 file changed, 1 deletion(-)

diff --git a/doc/progress.rst b/doc/progress.rst
index 48b2bd858..ef5ed6bae 100644
--- a/doc/progress.rst
+++ b/doc/progress.rst
@@ -8,7 +8,6 @@ Changelog
 
 0.11.0
 ~~~~~~
-* ADD #929: Fix data edit API
 * ADD #929: Add data edit API
 * FIX #873: Fixes an issue which resulted in incorrect URLs when printing OpenML objects after
   switching the server.