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摘要： import matplotlib.pyplot as plt import numpy as np from sklearn import datasets, linear_model from sklearn.metrics import mean_squared_error, r2_score 阅读全文

摘要： np.hstack将参数元组的元素数组按水平方向进行叠加 import numpy as np arr1 = [1,2,3] arr2 = [4,5] arr3 = [6,7] res = np.hstack((arr1, arr2,arr3)) print (res) # [1 2 3 4 5 6 阅读全文