Fix changed import for weather data check

Author: uvchik

windpowerlib/modelchain.py

@@ -8,7 +8,8 @@
 """
 import logging
 import pandas as pd
-from windpowerlib import wind_speed, density, temperature, power_output, tools
+from windpowerlib import (wind_speed, density, temperature, power_output,
+                          tools, data)
 
 
 class ModelChain(object):
@@ -510,7 +511,7 @@ def run_model(self, weather_df):
         'wind_speed'
 
         """
-        weather_df = tools.check_weather_data(weather_df)
+        weather_df = data.check_weather_data(weather_df)
 
         wind_speed_hub = self.wind_speed_hub(weather_df)
         density_hub = (

windpowerlib/turbine_cluster_modelchain.py

@@ -10,7 +10,7 @@
 import logging
 import pandas as pd
 from windpowerlib import wake_losses
-from windpowerlib.modelchain import ModelChain, tools
+from windpowerlib.modelchain import ModelChain, data
 
 
 class TurbineClusterModelChain(ModelChain):
@@ -289,7 +289,7 @@ def run_model(self, weather_df):
         'wind_speed'
 
         """
-        weather_df = tools.check_weather_data(weather_df)
+        weather_df = data.check_weather_data(weather_df)
 
         self.assign_power_curve(weather_df)
         self.power_plant.mean_hub_height()