Move python files to root folder; remove built docs

miplearn/classifiers/tests/test_evaluator.py

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+#  MIPLearn: Extensible Framework for Learning-Enhanced Mixed-Integer Optimization
+#  Copyright (C) 2020, UChicago Argonne, LLC. All rights reserved.
+#  Released under the modified BSD license. See COPYING.md for more details.
+
+import numpy as np
+from miplearn.classifiers.evaluator import ClassifierEvaluator
+from sklearn.neighbors import KNeighborsClassifier
+
+
+def test_evaluator():
+    clf_a = KNeighborsClassifier(n_neighbors=1)
+    clf_b = KNeighborsClassifier(n_neighbors=2)
+    x_train = np.array([[0, 0], [1, 0]])
+    y_train = np.array([0, 1])
+    clf_a.fit(x_train, y_train)
+    clf_b.fit(x_train, y_train)
+    ev = ClassifierEvaluator()
+    assert ev.evaluate(clf_a, x_train, y_train) == 1.0
+    assert ev.evaluate(clf_b, x_train, y_train) == 0.5
+