KNN-寻找最近邻

def solve():
    import pandas as pd
    import numpy as np
    from sklearn.neighbors import KNeighborsClassifier
    df = pd.read_csv(____)
    X = df.drop(____)
    y = df['____']
    knn = KNeighborsClassifier(____)
    knn.fit(____)
    sample = np.array(____)
    distances, indices = knn.kneighbors(____)
    print('____', indices[____].tolist())
    print('____', distances[____].round(____).tolist())