南璃

import numpy as npimport pandas as pdfrom pandas import DataFrame,Seriesdf_tb1=pd.read_csv("baby_trade.csv")df_tb2=pd.read_csv("baby_info.csv")date=df_tb2['birthday'].astype('str')#转换类型type(day)#查看类型year=df_tb2['birthday'].astype('str').apply(lamb