Update ace.py

ace.py

@@ -1,4 +1,5 @@
-# Copyright 2020 The HuggingFace Datasets Authors and the current dataset script contributor.
+# Copyright 2020 The HuggingFace Datasets Authors.
+# Copyright 2023 Cyril Zhang.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -38,12 +39,22 @@ class MockupDataset(datasets.GeneratorBasedBuilder):
 
     VERSION = datasets.Version("0.0.0")
     BUILDER_CONFIGS = []
+    
+    def __init__(self, name, data_config={}, **kwargs):
+        super().__init__(name=name, **kwargs)
+        
+        if 'length' not in data_config:
+            data_config['length'] = 20
+        if 'size' not in data_config:
+            data_config['size'] = 100
+
+        self.data_config = data_config
 
     def _info(self):
         features = datasets.Features(
             {
-                "x": datasets.Sequence(datasets.Value("int64"), length=-1),
-                "y": datasets.Sequence(datasets.Value("int64"), length=-1)
+                "x": datasets.Value("null"),
+                "y": datasets.Value("null")
             }
         )
 
@@ -67,8 +78,8 @@ class MockupDataset(datasets.GeneratorBasedBuilder):
 
     # method parameters are unpacked from `gen_kwargs` as given in `_split_generators`
     def _generate_examples(self, split):
-        for i in range(10):
-            yield i, {
-                "x": [0,1,0,1,0],
-                "y": [1,0,1,0,1]
+        for i in range(data_config['size']):
+            yield key, {
+                "x": [0]*data_config['length'],
+                "y": [1]*data_config['length']
             }