added forced package imports

lib/influxdb/dataframe_client.py

@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+"""DataFrame client for InfluxDB."""
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
+
+__all__ = ['DataFrameClient']
+
+try:
+    import pandas
+    del pandas
+except ImportError as err:
+    from .client import InfluxDBClient
+
+    class DataFrameClient(InfluxDBClient):
+        """DataFrameClient default class instantiation."""
+
+        err = err
+
+        def __init__(self, *a, **kw):
+            """Initialize the default DataFrameClient."""
+            super(DataFrameClient, self).__init__()
+            raise ImportError("DataFrameClient requires Pandas "
+                              "which couldn't be imported: %s" % self.err)
+else:
+    from ._dataframe_client import DataFrameClient