1、首先考虑你的pom.xml的依赖有没有放好：该配置项要想生效其实是依赖于项目中内嵌的tomcat容器：<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependenc

1、我们看一个例子：import pandas as pdimport matplotlib.pyplot as pltimport matplotlib.font_manager as fm#要求是：绘制各员工在不同柜台业绩平均值的柱状图#读取数据df = pd.read_excel(r'超市营业额2.xlsx')#修改异常值df.loc[df.交易额 > 3000,'交易额'] = 30