!2753 Fix vocdataset/cocodataset docstring problem

Merge pull request !2753 from xiefangqi/xfq_fix_docstring

mindspore/dataset/engine/datasets.py

@@ -4034,8 +4034,8 @@ class VOCDataset(MappableDataset):
     A source dataset for reading and parsing VOC dataset.
 
     The generated dataset has two columns :
-    task='Detection' : ['image', 'annotation'].
+    task='Detection' : ['image', 'annotation'];
-    task='Segmentation' : ['image', 'target']
+    task='Segmentation' : ['image', 'target'].
     The shape of both column 'image' and 'target' is [image_size] if decode flag is False, or [H, W, C]
     otherwise.
     The type of both tensor 'image' and 'target' is uint8.
@@ -4094,8 +4094,8 @@ class VOCDataset(MappableDataset):
     Args:
         dataset_dir (str): Path to the root directory that contains the dataset.
         task (str): Set the task type of reading voc data, now only support "Segmentation" or "Detection"
-            (default="Segmentation")
+            (default="Segmentation").
-        mode(str): Set the data list txt file to be readed (default="train")
+        mode (str): Set the data list txt file to be readed (default="train").
         class_indexing (dict, optional): A str-to-int mapping from label name to index
             (default=None, the folder names will be sorted alphabetically and each
             class will be given a unique index starting from 0).
@@ -4114,9 +4114,9 @@ class VOCDataset(MappableDataset):
             argument should be specified only when num_shards is also specified.
 
     Raises:
-        RuntimeError: If xml of Annotations is a invalid format
+        RuntimeError: If xml of Annotations is a invalid format.
-        RuntimeError: If xml of Annotations loss attribution of "object"
+        RuntimeError: If xml of Annotations loss attribution of "object".
-        RuntimeError: If xml of Annotations loss attribution of "bndbox"
+        RuntimeError: If xml of Annotations loss attribution of "bndbox".
         RuntimeError: If sampler and shuffle are specified at the same time.
         RuntimeError: If sampler and sharding are specified at the same time.
         RuntimeError: If num_shards is specified but shard_id is None.
@@ -4230,10 +4230,10 @@ class CocoDataset(MappableDataset):
     """
     A source dataset for reading and parsing COCO dataset.
 
-    CocoDataset support four kinds of task:
+    CocoDataset support four kinds of task: 2017 Train/Val/Test Detection, Keypoints, Stuff, Panoptic.
-        2017 Train/Val/Test Detection, Keypoints, Stuff, Panoptic.
 
     The generated dataset has multi-columns :
+
         - task='Detection', column: [['image', dtype=uint8], ['bbox', dtype=float32], ['category_id', dtype=uint32],
           ['iscrowd', dtype=uint32]].
         - task='Stuff', column: [['image', dtype=uint8], ['segmentation',dtype=float32], ['iscrowd',dtype=uint32]].
@@ -4299,7 +4299,7 @@ class CocoDataset(MappableDataset):
         dataset_dir (str): Path to the root directory that contains the dataset.
         annotation_file (str): Path to the annotation json.
         task (str): Set the task type of reading coco data, now support 'Detection'/'Stuff'/'Panoptic'/'Keypoint'
-            (default='Detection')
+            (default='Detection').
         num_samples (int, optional): The number of images to be included in the dataset
             (default=None, all images).
         num_parallel_workers (int, optional): Number of workers to read the data