From fa2c0c15e8388c56233953bbbd4859466dd7330f Mon Sep 17 00:00:00 2001
From: dcherian <deepak@cherian.net>
Date: Thu, 7 Nov 2019 07:48:16 -0700
Subject: [PATCH 1/2] Don't initialize DataArrays with Pandas attrs.

---
 xarray/core/dataarray.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/xarray/core/dataarray.py b/xarray/core/dataarray.py
index 35ee90fb5c8..3fa6323823f 100644
--- a/xarray/core/dataarray.py
+++ b/xarray/core/dataarray.py
@@ -52,6 +52,7 @@
 from .dataset import Dataset, merge_indexes, split_indexes
 from .formatting import format_item
 from .indexes import Indexes, default_indexes
+from .merge import PANDAS_TYPES
 from .options import OPTIONS
 from .utils import Default, ReprObject, _default, _check_inplace, either_dict_or_kwargs
 from .variable import (
@@ -358,7 +359,7 @@ def __init__(
                 dims = getattr(data, "dims", getattr(coords, "dims", None))
             if name is None:
                 name = getattr(data, "name", None)
-            if attrs is None:
+            if attrs is None and not isinstance(data, PANDAS_TYPES):
                 attrs = getattr(data, "attrs", None)
             if encoding is None:
                 encoding = getattr(data, "encoding", None)

From 8703fe24f37e441516225d16914a807aad68cc96 Mon Sep 17 00:00:00 2001
From: dcherian <deepak@cherian.net>
Date: Thu, 7 Nov 2019 08:27:23 -0700
Subject: [PATCH 2/2] re-enable pandas-dev CI.

---
 ci/azure/install.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ci/azure/install.yml b/ci/azure/install.yml
index 8da0ac1b5de..fee886ba804 100644
--- a/ci/azure/install.yml
+++ b/ci/azure/install.yml
@@ -16,7 +16,7 @@ steps:
         --pre \
         --upgrade \
         matplotlib \
-        pandas=0.26.0.dev0+628.g03c1a3db2 \  # FIXME https://github.com/pydata/xarray/issues/3440
+        pandas \
         scipy
         # numpy \  # FIXME https://github.com/pydata/xarray/issues/3409
     pip install \