Add solr_timestamp_to_datetime method from ppa

CHANGELOG.rst

@@ -3,10 +3,11 @@
 CHANGELOG
 =========
 
-0.6
+0.5.3
 ---
 
 * Support default option adding fields to solr schema
+* Add utility method to convert Solr timestamp to python datetime
 
 0.5.2
 -----

parasolr/tests/test_utils.py

@@ -0,0 +1,12 @@
+from datetime import datetime
+
+from parasolr.utils import solr_timestamp_to_datetime
+
+
+def test_solr_timestamp_to_datetime():
+    # with microseconds
+    solr_dt = solr_timestamp_to_datetime('2018-07-02T21:08:46.428Z')
+    assert solr_dt == datetime(2018, 7, 2, 21, 8, 46)
+    # without
+    solr_dt = solr_timestamp_to_datetime('2018-07-02T21:08:46Z')
+    assert solr_dt == datetime(2018, 7, 2, 21, 8, 46)

parasolr/utils.py

@@ -0,0 +1,12 @@
+from datetime import datetime
+
+
+def solr_timestamp_to_datetime(solr_time):
+    """Convert Solr timestamp (isoformat that may or may not include
+    microseconds) to :class:`datetime.datetime`"""
+    # Solr stores date in isoformat; convert to datetime object
+    # - microseconds only included when second is not exact; strip out if
+    #    they are present
+    if '.' in solr_time:
+        solr_time = '%sZ' % solr_time.split('.')[0]
+    return datetime.strptime(solr_time, '%Y-%m-%dT%H:%M:%SZ')