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为什么我的地图不显示

import json

from pyecharts.charts import Map

from pyecharts.options import *

f_cn = open("E:/疫情.txt", "r", encoding="UTF-8")

data = f_cn.read()

data_dict = json.loads(data)

province_data_list = data_dict["areaTree"][0]["children"]

data_list = []

for province_data in province_data_list:

province_name = province_data["name"]

if province_name == "新疆":

province_name = province_name + "维吾尔自治区"

elif province_name == "西藏" or province_name == "内蒙古":

province_name = province_name + "自治区"

elif province_name == "宁夏":

province_name = province_name + "回族自治区"

elif province_name == "广西":

province_name = province_name + "壮族自治区"

elif province_name == "香港" or province_name == "澳门":

province_name = province_name + "特别行政区"

elif province_name == "重庆" or province_name == "北京" or province_name == "上海" or province_name == "天津":

province_name = province_name + "市"

else:

province_name = province_name + "省"

province_confirm = province_data["total"]["confirm"]

data_list.append((province_name, province_confirm))

map = Map()

map.add("各省份确诊人数", data_list, "china")

map.set_global_opts(

title_opts=TitleOpts(title="全国疫情地图"),

visualmap_opts=VisualMapOpts(

is_show=True, # 是否显示

is_piecewise=True, # 是否分段

pieces=[

{"min": 1, "max": 99, "label": "1-99人", "color": "#CCFFFF"},

{"min": 100, "max": 999, "label": "100-909人", "color": "#FFFF99"},

{"min": 1000, "max": 4999, "label": "1000-4999人", "color": "#FF9966"},

{"min": 5000, "max": 9999, "label": "5000-9999人", "color": "#FF6666"},

{"min": 10000, "max": 99999, "label": "10000-99999人", "color": "#CC3333"},

{"min": 100000, "max": "100000+", "color": "#990033"}

]

)

)

map.render("全国疫情地图.html")

f_cn.close()