str accessor

Author: 0x0L

doc/api.rst

@@ -324,6 +324,7 @@ Computation
    DataArray.quantile
    DataArray.differentiate
    DataArray.integrate
+   DataArray.str
 
 **Aggregation**:
 :py:attr:`~DataArray.all`
@@ -557,6 +558,15 @@ Resample objects also implement the GroupBy interface
    core.resample.DatasetResample.nearest
    core.resample.DatasetResample.pad
 
+Accessors
+=========
+
+.. autosummary::
+   :toctree: generated/
+
+   core.accessor_dt.DatetimeAccessor
+   core.accessor_str.StringAccessor
+
 Custom Indexes
 ==============
 .. autosummary::

doc/whats-new.rst

@@ -49,6 +49,8 @@ Enhancements
 - Like :py:class:`pandas.DatetimeIndex`, :py:class:`CFTimeIndex` now supports a
   :py:meth:`~xarray.CFTimeIndex.strftime` method to return an index of string
   formatted datetimes. By `Alan Brammer <https://github.com/abrammer>`_.
+- Add ``.str`` accessor to DataArrays for string related manipulations.
+  By `0x0L <https://github.com/0x0L>`_.
 
 Bug fixes
 ~~~~~~~~~

xarray/core/accessors.py renamed to xarray/core/accessor_dt.py

@@ -165,13 +165,13 @@ class DatetimeAccessor:
 
      """
 
-    def __init__(self, xarray_obj):
-        if not _contains_datetime_like_objects(xarray_obj):
+    def __init__(self, obj):
+        if not _contains_datetime_like_objects(obj):
             raise TypeError("'dt' accessor only available for "
                             "DataArray with datetime64 timedelta64 dtype or "
                             "for arrays containing cftime datetime "
                             "objects.")
-        self._obj = xarray_obj
+        self._obj = obj
 
     def _tslib_field_accessor(name, docstring=None, dtype=None):
         def f(self, dtype=dtype):