Python 3: replace 'basestring' by 'six.string_types'

'basestring' will only work in Python 2. Using 'six.string_types' instead makes
the code compatible with both Python 2 and 3.

Change-Id: I572506ce6d0cc7570dc264711d19619746949d49

1 files changed, 6 insertions, 2 deletions

diff --git a/pycadf/metric.py b/pycadf/metric.py
index becce39..d110f2c 100644
--- a/pycadf/metric.py
+++ b/pycadf/metric.py
@@ -16,6 +16,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+import six
+
 from pycadf import cadftype
 from pycadf import identifier
 
@@ -40,9 +42,11 @@ class Metric(cadftype.CADFAbstractType):
     metricId = cadftype.ValidatorDescriptor(METRIC_KEYNAME_METRICID,
                                             lambda x: identifier.is_valid(x))
     unit = cadftype.ValidatorDescriptor(METRIC_KEYNAME_UNIT,
-                                        lambda x: isinstance(x, basestring))
+                                        lambda x: isinstance(x,
+                                                             six.string_types))
     name = cadftype.ValidatorDescriptor(METRIC_KEYNAME_NAME,
-                                        lambda x: isinstance(x, basestring))
+                                        lambda x: isinstance(x,
+                                                             six.string_types))
 
     def __init__(self, metricId=None, unit=None, name=None):
         # Metric.id