[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

@@ -81,6 +81,7 @@ def __categorize_system(argument_value: float, argument_name: str) -> None:
         error_msg = "Should be 'work', 'heat', or 'internal_energy_variation'."
         raise ValueError(f"{error_type} {error_msg}")
 
+
 def work(heat: float, internal_energy_variation: float) -> float:
     """
     >>> work(50.0, -20.0)
@@ -104,7 +105,7 @@ 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)
@@ -133,7 +134,7 @@ 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
@@ -162,7 +163,7 @@ 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