Dataset infos in yaml (#4926)

* wip

* fix Features yaml

* splits to yaml

* add _to_yaml_list

* style

* example: conll2000

* example: crime_and_punish

* add pyyaml dependency

* remove unused imports

* remove validation tests

* style

* allow dataset_infos to be struct or list in YAML

* fix test

* style

* update "datasets-cli test" + remove "version"

* remove config definitions in conll2000 and crime_and_punish

* remove versions for conll2000 and crime_and_punish

* move conll2000 and cap dummy data

* fix test

* add tests

* comments and tests

* more test

* don't mention the dataset_infos.json file in docs

* nit in docs

* docs

* dataset_infos -> dataset_info

* again

* use id2label in class_label

* update conll2000

* fix utf-8 yaml dump

* --save_infos -> --save_info

* Apply suggestions from code review

Co-authored-by: Polina Kazakova <polina@huggingface.co>

* style

* fix reloading a single dataset_info

* push info to README.md in push_to_hub

* update test

Co-authored-by: Polina Kazakova <polina@huggingface.co>

Commit from https://github.com/huggingface/datasets/commit/67e65c90e9490810b89ee140da11fdd13c356c9c

README.md

@@ -2,10 +2,20 @@
 language:
 - en
 paperswithcode_id: null
-pretty_name: Crime and Punishment
+pretty_name: CrimeAndPunish
+dataset_info:
+  dataset_size: 1270540
+  download_size: 1201735
+  features:
+  - dtype: string
+    name: line
+  splits:
+  - name: train
+    num_bytes: 1270540
+    num_examples: 21969
 ---
 
-# Dataset Card for Crime and Punishment
+# Dataset Card for "crime_and_punish"
 
 ## Table of Contents
 - [Dataset Description](#dataset-description)
@@ -144,4 +154,4 @@ The data fields are the same among all splits.
 
 ### Contributions
 
-Thanks to [@patrickvonplaten](https://github.com/patrickvonplaten), [@thomwolf](https://github.com/thomwolf) for adding this dataset.
+Thanks to [@patrickvonplaten](https://github.com/patrickvonplaten), [@thomwolf](https://github.com/thomwolf) for adding this dataset.

crime_and_punish.py

@@ -8,36 +8,7 @@ _URL = "https://www.gutenberg.org/files/2554/2554-h/2554-h.htm"
 _DATA_URL = "https://raw.githubusercontent.com/patrickvonplaten/datasets/master/crime_and_punishment.txt"
 
 
-class CrimeAndPunishConfig(datasets.BuilderConfig):
-    """BuilderConfig for Crime and Punish."""
-
-    def __init__(self, data_url, **kwargs):
-        """BuilderConfig for BlogAuthorship
-
-        Args:
-          data_url: `string`, url to the dataset (word or raw level)
-          **kwargs: keyword arguments forwarded to super.
-        """
-        super(CrimeAndPunishConfig, self).__init__(
-            version=datasets.Version(
-                "1.0.0",
-            ),
-            **kwargs,
-        )
-        self.data_url = data_url
-
-
 class CrimeAndPunish(datasets.GeneratorBasedBuilder):
-
-    VERSION = datasets.Version("0.1.0")
-    BUILDER_CONFIGS = [
-        CrimeAndPunishConfig(
-            name="crime-and-punish",
-            data_url=_DATA_URL,
-            description="word level dataset. No processing is needed other than replacing newlines with <eos> tokens.",
-        ),
-    ]
-
     def _info(self):
         return datasets.DatasetInfo(
             # This is the description that will appear on the datasets page.
@@ -58,17 +29,14 @@ class CrimeAndPunish(datasets.GeneratorBasedBuilder):
     def _split_generators(self, dl_manager):
         """Returns SplitGenerators."""
 
-        if self.config.name == "crime-and-punish":
-            data = dl_manager.download_and_extract(self.config.data_url)
+        data = dl_manager.download_and_extract(_DATA_URL)
 
-            return [
-                datasets.SplitGenerator(
-                    name=datasets.Split.TRAIN,
-                    gen_kwargs={"data_file": data, "split": "train"},
-                ),
-            ]
-        else:
-            raise ValueError(f"{self.config.name} does not exist")
+        return [
+            datasets.SplitGenerator(
+                name=datasets.Split.TRAIN,
+                gen_kwargs={"data_file": data, "split": "train"},
+            ),
+        ]
 
     def _generate_examples(self, data_file, split):
 

dataset_infos.json

@@ -1 +0,0 @@
-{"crime-and-punish": {"description": "\n", "citation": "", "homepage": "https://www.gutenberg.org/files/2554/2554-h/2554-h.htm", "license": "", "features": {"line": {"dtype": "string", "id": null, "_type": "Value"}}, "supervised_keys": null, "builder_name": "crime_and_punish", "config_name": "crime-and-punish", "version": {"version_str": "1.0.0", "description": null, "datasets_version_to_prepare": null, "major": 1, "minor": 0, "patch": 0}, "splits": {"train": {"name": "train", "num_bytes": 1270540, "num_examples": 21969, "dataset_name": "crime_and_punish"}}, "download_checksums": {"https://raw.githubusercontent.com/patrickvonplaten/datasets/master/crime_and_punishment.txt": {"num_bytes": 1201735, "checksum": "3582bcff83e5e24ae5acb2935a191ea5ead66b11fc12fa19b0397834e8296c83"}}, "download_size": 1201735, "dataset_size": 1270540, "size_in_bytes": 2472275}}