np.AxisError was added in numpy 1.13

Author: drnextgis

setup.py

@@ -25,7 +25,7 @@
     'Topic :: Scientific/Engineering',
 ]
 
-INSTALL_REQUIRES = ['numpy >= 1.12', 'pandas >= 0.19.2']
+INSTALL_REQUIRES = ['numpy >= 1.13', 'pandas >= 0.19.2']
 TESTS_REQUIRE = ['pytest >= 2.7.1']
 if sys.version_info[0] < 3:
     TESTS_REQUIRE.append('mock')

xarray/core/dask_array_compat.py

@@ -44,7 +44,13 @@ def isin(element, test_elements, assume_unique=False, invert=False):
     import math
     from numbers import Integral, Real
 
-    AxisError = np.AxisError
+    try:
+        AxisError = np.AxisError
+    except AttributeError:
+        try:
+            np.array([0]).sum(axis=5)
+        except Exception as e:
+            AxisError = type(e)
 
     def validate_axis(axis, ndim):
         """ Validate an input to axis= keywords """