Make docstring of function better understandable

Author: SabineHaas

tests/test_wind_turbine.py

@@ -34,7 +34,8 @@ def test_error_raising(self):
     def test_get_turbine_data_from_file(self):
         # Raise FileNotFoundError due to missing
         with pytest.raises(FileNotFoundError):
-            get_turbine_data_from_file(turbine_type='...', file_='not_existent')
+            get_turbine_data_from_file(turbine_type='...',
+                                       file_='not_existent')
 
     def test_get_turbine_types(self):
         get_turbine_types(print_out=False)

windpowerlib/wind_turbine.py

@@ -266,7 +266,7 @@ def isfloat(x):
 
 def get_turbine_data_from_oedb(turbine_type, fetch_curve):
     r"""
-    Gets turbine data from the OpenEnergy Database (oedb).
+    Fetches data for one wind turbine type from the OpenEnergy Database (oedb).
 
     Parameters
     ----------
@@ -283,9 +283,9 @@ def get_turbine_data_from_oedb(turbine_type, fetch_curve):
     -------
     Tuple (pandas.DataFrame, float)
         Power curve or power coefficient curve (pandas.DataFrame) and nominal
-        power (float). Power (coefficient) curve DataFrame contains power
-        coefficient curve values (dimensionless) or power curve values in W
-        with the corresponding wind speeds in m/s.
+        power (float) of one wind turbine type. Power (coefficient) curve
+        DataFrame contains power coefficient curve values (dimensionless) or
+        power curve values in W with the corresponding wind speeds in m/s.
 
     """
     # Extract data