assign是直接向DataFrame对象添加新的一列
示例:
import numpy as np import pandas as pd data = {‘name‘:[‘lily‘,‘jack‘,‘hanson‘,‘bom‘],‘age‘:np.random.randint(15,25,size=4),‘gerder‘:[‘F‘,‘M‘,‘M‘,‘F‘]} df = pd.DataFrame(data) df.assign(score=np.random.randint(60,100,size=4))
结果:
添加的列名不能用字符串表示
原文地址:https://www.cnblogs.com/jason--/p/11502710.html
时间: 2024-10-12 14:59:16