用自帶max()方法
max()
list = ['ale', 'apple', 'plea'] res = max(list, key=len, default='') print(res) >>>apple
key:指定取最大值的函數,我們要取長度最大的,故設置爲len default:如果取不到默認返回的值,這裏設置爲空字符串
key
default
示例 import numpy as np a = np.loadtxt('mnist_test.csv', usecols=np.arange(2,786), delimiter=',', skiprows=1) a.res
解決方法 pip uninstall jupyter notebook pip install jupyter notebook -i https://pypi.tuna.tsinghua.edu.cn/simple --defa