Update utils/psychrometrics.py

utils/psychrometrics.py

@@ -721,7 +721,7 @@ class Psychrometrics:
             'flow_rate': flow_mix
         }
 
-#  Example Usage (Preserved and expanded)
+# Example Usage (Preserved and expanded)
 if __name__ == "__main__":
     # Test basic properties
     t_db_test = 25.0
@@ -769,7 +769,9 @@ if __name__ == "__main__":
         print(f"Wet bulb at -5°C, 50% RH: {Psychrometrics.wet_bulb_temperature(t_db=-5.0, rh=50.0):.3f}°C")
         # Test high temp / high humidity
         props_hot_humid = Psychrometrics.moist_air_properties(t_db=50, rh=90, p_atm=101325)
-        print(f"Properties at 50°C, 90% RH: W={props_hot_humid[\"humidity_ratio_kg_kg\"]:.6f}, H={props_hot_humid[\"enthalpy_j_kg\"]:.0f}")
+        humidity_ratio = props_hot_humid["humidity_ratio_kg_kg"]
+        enthalpy = props_hot_humid["enthalpy_j_kg"]
+        print(f"Properties at 50°C, 90% RH: W={humidity_ratio:.6f}, H={enthalpy:.0f}")
     except ValueError as e:
         print(f"Error during edge case test: {e}")