in FR.py parser, remove datapoints where all production values are nu…

…ll (#1566)

parsers/FR.py

@@ -4,6 +4,8 @@
 import json
 import logging
 import os
+import math
+
 import pandas as pd
 import requests
 import xml.etree.ElementTree as ET
@@ -27,6 +29,11 @@
     'pompage'
 ]
 
+def is_not_nan_and_truthy(v):
+    if isinstance(v, float) and math.isnan(v):
+        return False
+    return bool(v)
+
 
 def fetch_production(zone_key='FR', session=None, target_datetime=None,
                      logger=logging.getLogger(__name__)):
@@ -76,6 +83,11 @@ def fetch_production(zone_key='FR', session=None, target_datetime=None,
             'hydro': row[1]['pompage'] * -1 + row[1]['hydraulique_step_turbinage'] * -1
         }
 
+        # if all production values are null, ignore datapoint
+        if not any([is_not_nan_and_truthy(v)
+                    for k, v in production.items()]):
+            continue
+
         datapoints.append({
             'zoneKey': zone_key,
             'datetime': arrow.get(row[1]['date_heure']).datetime,