[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

physics/first_law_of_thermodynamics.py

@@ -43,15 +43,15 @@ def categorize_system(argument_value: float, argument_name: str) -> None:
             print("The system is expanding.")
         elif argument_value < 0:
             print("The system is compressing.")
-    
+
     elif argument_name == "heat":
         if argument_value == 0:
             print("The system is adiabatic (no heat exchange).")
         elif argument_value > 0:
             print("The system is endothermic (absorbing heat).")
         elif argument_value < 0:
             print("The system is exothermic (releasing heat).")
-    
+
     elif argument_name == "internal_energy_variation":
         if argument_value == 0:
             print("The system is isothermic (constant internal energy)")
@@ -84,11 +84,12 @@ def work(heat: float, internal_energy_variation: float) -> float:
 
     categorize_system(heat, "heat")
     categorize_system(internal_energy_variation, "internal_energy_variation")
-    
+
     work = heat - internal_energy_variation
     categorize_system(work, "work")
     return round(work, 1)
 
+
 def heat(internal_energy_variation: float, work: float) -> float:
     """
     >>> heat(-20.0, 30.0)
@@ -112,11 +113,12 @@ def heat(internal_energy_variation: float, work: float) -> float:
 
     categorize_system(internal_energy_variation, "internal_energy_variation")
     categorize_system(work, "work")
-    
+
     heat = round(internal_energy_variation + work, 1)
     categorize_system(heat, "heat")
     return heat
 
+
 def internal_energy_variation(heat: float, work: float) -> float:
     """
     >>> internal_energy_variation(50.0, 30.0)
@@ -140,11 +142,12 @@ def internal_energy_variation(heat: float, work: float) -> float:
 
     categorize_system(heat, "heat")
     categorize_system(work, "work")
-    
+
     internal_energy_variation = round(heat - work, 1)
     categorize_system(internal_energy_variation, "internal_energy_variation")
     return internal_energy_variation
 
+
 if __name__ == "__main__":
     from doctest import testmod