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
@@ -739,7 +739,8 @@ if __name__ == "__main__":
     for key, value in props_altitude.items():
         print(f"{key}: {value:.6f}")
     p_calc_alt = Psychrometrics.pressure_at_altitude(altitude_test)
-    print(f"Calculated pressure at {altitude_test}m: {p_calc_alt:.0f} Pa (matches: {abs(p_calc_alt - props_altitude[\"atmospheric_pressure_pa\"]) < 1e-3})")
+    pressure_diff = abs(p_calc_alt - props_altitude["atmospheric_pressure_pa"]) < 1e-3
+    print(f"Calculated pressure at {altitude_test}m: {p_calc_alt:.0f} Pa (matches: {pressure_diff})")
 
     # Test air mixing
     print("\n--- Air Mixing Test ---")