update doc

Author: b8raoult

docs/index.rst

@@ -37,6 +37,7 @@ datasets <building-introduction>`.
 
 -  :doc:`using/introduction`
 -  :doc:`using/opening`
+-  :doc:`using/methods`
 -  :doc:`using/subsetting`
 -  :doc:`using/combining`
 -  :doc:`using/selecting`
@@ -53,6 +54,7 @@ datasets <building-introduction>`.
 
    using/introduction
    using/opening
+   using/methods
    using/subsetting
    using/combining
    using/selecting

docs/using/code/select1_.py

@@ -1,4 +1 @@
-ds = open_dataset(
-    dataset,
-    select=["2t", "tp"],
-)
+ds = open_dataset(dataset, select=["2t", "tp"])

docs/using/code/select2_.py

@@ -1,4 +1 @@
-ds = open_dataset(
-    dataset,
-    select={"2t", "tp"},
-)
+ds = open_dataset(dataset, select={"2t", "tp"})

docs/using/methods.rst

@@ -0,0 +1,27 @@
+########################
+ Methods and attributes
+########################
+
+.. warning::
+
+   Page in progress.
+
+The following methods and attributes are available for the objects
+returned by ``open_dataset``:
+
+*********
+ Methods
+*********
+
+__len__
+   The number of rows (dates) in the dataset.
+
+__getitem__
+   Access the dataset's data values.
+
+************
+ Attributes
+************
+
+shape:
+   A tuple of the dataset's dimensions.