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

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

Author: pre-commit-ci[bot]

Diff for: linear_programming/dual_simplex.py

@@ -5,9 +5,9 @@
 prob = LpProblem("Dual_Simplex_Example", LpMaximize)
 
 # Create decision variables for the dual problem
-y1 = LpVariable('y1', lowBound=0)  # y1 >= 0
-y2 = LpVariable('y2', lowBound=0)  # y2 >= 0
-y3 = LpVariable('y3', lowBound=0)  # y3 >= 0
+y1 = LpVariable("y1", lowBound=0)  # y1 >= 0
+y2 = LpVariable("y2", lowBound=0)  # y2 >= 0
+y3 = LpVariable("y3", lowBound=0)  # y3 >= 0
 
 # Objective function (minimization in dual corresponds to maximization here)
 prob += 4 * y1 + 2 * y2 + 3 * y3, "Objective"
@@ -29,4 +29,3 @@
 
 # Print the objective value (minimized value)
 print(f"Optimal objective value: {value(prob.objective)}")
-