cannot import name Markup from jinja2解决方案

web框架flask中引入pyecharts代码运行，出错显cannot import name 'Markup' from 'jinja2'（如图1）,分析发现在jinja2版本过高 3.1.2中已经去掉了Markup,改为marupsafe可实现。

from flask import Flaskfrom jinja2 import Markup, Environment, FileSystemLoaderfrom pyecharts.globals import CurrentConfig# 关于 CurrentConfig，可参考 [基本使用-全局变量]CurrentConfig.GLOBAL_ENV = Environment(loader=FileSystemLoader("./templates"))from pyecharts import options as optsfrom pyecharts.charts import Barapp = Flask(__name__, static_folder="templates")def bar_base() -> Bar:    c = (        Bar()        .add_xaxis(["衬衫", "羊毛衫", "雪纺衫", "裤子", "高跟鞋", "袜子"])        .add_yaxis("商家A", [5, 20, 36, 10, 75, 90])        .add_yaxis("商家B", [15, 25, 16, 55, 48, 8])        .set_global_opts(title_opts=opts.TitleOpts(title="Bar-基本示例", subtitle="我是副标题"))    )    return c@app.route("/")def index():    c = bar_base()    return Markup(c.render_embed())if __name__ == "__main__":    app.run()

将代码改一下， 

from jinja2.utils import markupsafe

def index():    c = bar_base()    return markupsafe.Markup(c.render_embed())

代码如下： 

from flask import Flask# from jinja2 import Markupfrom jinja2.utils import markupsafefrom pyecharts import options as optsfrom pyecharts.charts import Barapp = Flask(__name__, static_folder="templates")def bar_base() -> Bar:    c = (        Bar()            .add_xaxis(["衬衫", "羊毛衫", "雪纺衫", "裤子", "高跟鞋", "袜子"])            .add_yaxis("商家A", [5, 20, 36, 10, 75, 90])            .add_yaxis("商家B", [15, 25, 16, 55, 48, 8])            .set_global_opts(title_opts=opts.TitleOpts(title="Bar-基本示例", subtitle="我是副标题"))    )    return c@app.route("/")def index():    c = bar_base()    return markupsafe.Markup(c.render_embed())if __name__ == "__main__":    app.run()

运行结果：

来源地址：https://blog.csdn.net/u014125025/article/details/129064453