W3School TIY Editor

import numpy as np arr = np.array([1, 2, 3, 4, 5, 6, 7]) # 创建一个空列表 filter_arr = [] # 遍历 arr 中的每个元素 for element in arr: # 如果元素能被 2 整除，设为 True，否则为 False if element % 2 == 0: filter_arr.append(True) else: filter_arr.append(False) newarr = arr[filter_arr] print(filter_arr) print(newarr)