Fix the compatibility to pandas DataFrame

SatoshiNewton · web-flow · commit 576a881bc79b · 2018-01-09T15:22:34.000+08:00
Originally, the setting is use the list to confirm the precision issue,  ['n', 'u', 'ms', 's', 'm', 'h', 'N', None].
However, i change the list to another form, ['n', 'u', 'ms', 's', 'm', 'h', 'N', 'U', 'L', 'S', 'M', 'H', None], because the pandas have some different in mine work.
Pandas version: 0.22.0
OS: OS X.
diff --git a/influxdb/client.py b/influxdb/client.py
@@ -492,7 +492,7 @@ def _write_points(self,
                       retention_policy,
                       tags,
                       protocol='json'):
-        if time_precision not in ['n', 'u', 'ms', 's', 'm', 'h', None]:
+        if time_precision not in ['n', 'u', 'ms', 's', 'm', 'h', 'N', 'U', 'L', 'S', 'M', 'H', None]:
             raise ValueError(
                 "Invalid time precision is given. "
                 "(use 'n', 'u', 'ms', 's', 'm' or 'h')")
