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

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Author: pre-commit-ci[bot]

machine_learning/sequential_minimum_optimization.py

@@ -442,6 +442,7 @@ class Kernel:
     >>> kernel._kernel_name
     'linear'
     """
+
     def __init__(self, kernel, degree=1.0, coef0=0.0, gamma=1.0):
         self.degree = np.float64(degree)
         self.coef0 = np.float64(coef0)