Style/apply black formatter

Tests/test_quadratic_equation.py

@@ -1,5 +1,6 @@
 import os
 import sys
+
 # Import the testing module
 import unittest
 
@@ -10,27 +11,28 @@
 # Import the QuadraticEquation class from quadratic_equation.py
 from quadratic_equation import QuadraticEquation
 
+
 # Create a test class that inherits from TestCase
 class TestQuadraticEquation(unittest.TestCase):
 
     @classmethod
     def setUpClass(cls):
-        pass # Called before all tests start
+        pass  # Called before all tests start
 
     @classmethod
     def tearDownClass(cls):
-        pass # Called after all tests finish
+        pass  # Called after all tests finish
 
     def setUp(self):
-        pass # Called before each individual test
+        pass  # Called before each individual test
 
     def tearDown(self):
         # Called after each individual test
         pass
 
     # Discriminant tests
     def test_discriminant(self):
-        
+
         # Equation with 1 real root
         qua_eq1 = QuadraticEquation(1, 2, 1)
         self.assertEqual(qua_eq1.discriminant(), 0)
@@ -47,7 +49,7 @@ def test_one_real_root(self):
         qe = QuadraticEquation(1, 2, 1)
         qe.solve()
         self.assertEqual(qe.x1, qe.x2)  # Oba kořeny jsou stejné
-        
+
     def test_two_real_roots(self):
         qe = QuadraticEquation(1, -5, 6)
         qe.solve()
@@ -58,12 +60,13 @@ def test_complex_roots(self):
         qe = QuadraticEquation(1, 2, 5)
         qe.solve()
         self.assertEqual(qe.x1.imag > 0, True)  # Má imaginární část
-        
+
     def test_vertex_calculation(self):
         qe = QuadraticEquation(1, -4, 4)
         qe.solve()
         self.assertAlmostEqual(qe.vertex_x, 2.0, places=3)
         self.assertAlmostEqual(qe.vertex_y, 0.0, places=3)
 
+
 if __name__ == "__main__":
-    unittest.main()
+    unittest.main()

canvas.py

@@ -1,11 +1,12 @@
 from matplotlib.figure import Figure
 from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg
 
+
 class MplCanvas(FigureCanvasQTAgg):
 
     def __init__(self, parent=None, width=5, height=5, dpi=100):
         fig = Figure(figsize=(width, height), dpi=dpi)
         self.axes = fig.add_subplot(111)
-        self.axes.set_xlabel('x-axis', fontsize=12)
-        self.axes.set_ylabel('y-axis', fontsize=12)
-        super(MplCanvas, self).__init__(fig)
+        self.axes.set_xlabel("x-axis", fontsize=12)
+        self.axes.set_ylabel("y-axis", fontsize=12)
+        super(MplCanvas, self).__init__(fig)

config.py

@@ -12,4 +12,4 @@
 
 # Window dimensions
 WINDOW_WIDTH = 1200
-WINDOW_HEIGHT = 600
+WINDOW_HEIGHT = 600