嵌套字典按字典值排序

这里有一组关于各省各市上市公司数量的嵌套字典数据，我想实现按各省上市公司数量排序？
数据如下：

lsd={‘山东’: {‘烟台’: 39, ‘青岛’: 36, ‘济南’: 26, ‘潍坊’: 24, ‘淄博’: 23, ‘威海’: 10, ‘济宁’: 9, ‘德州’: 9, ‘滨州’: 7, ‘东营’: 5, ‘临沂’: 4, ‘泰安’: 4, ‘聊城’: 4, ‘菏泽’: 2, ‘荣成’: 1, ‘莱芜’: 1, ‘日照’: 1, ‘枣庄’: 1}, ‘甘肃’: {‘兰州’: 20, ‘白银’: 3, ‘陇南’: 2, ‘武威’: 2, ‘酒泉’: 2, ‘嘉峪关’: 2, ‘天水’: 2}, ‘吉林’: {‘长春’: 25, ‘吉林’: 8, ‘通化’: 6, ‘延边’: 2, ‘辽源’: 1}, ‘江苏’: {‘苏州’: 109, ‘南京’: 87, ‘无锡’: 77, ‘常州’: 43, ‘南通’: 33, ‘扬州’: 13, ‘镇江’: 13, ‘徐州’: 10, ‘连云港’: 7, ‘泰州’: 7, ‘盐城’: 6, ‘宿迁’: 3, ‘淮安’: 2, ‘张家港’: 1}, ‘北京’: {‘北京’: 325}, ‘山西’: {‘太原’: 19, ‘大同’: 4, ‘运城’: 4, ‘长治’: 2, ‘晋中’: 2, ‘临汾’: 2, ‘阳泉’: 2, ‘忻州’: 1, ‘吕梁’: 1, ‘晋城’: 1}, ‘湖北’: {‘武汉’: 58, ‘荆州’: 8, ‘襄阳’: 8, ‘黄石’: 8, ‘宜昌’: 7, ‘荆门’: 4, ‘鄂州’: 3, ‘孝感’: 2, ‘潜江’: 2, ‘黄冈’: 1, ‘汉川’: 1, ‘仙桃’: 1, ‘咸宁’: 1, ‘随州’: 1, ‘十堰’: 1}, ‘河南’: {‘郑州’: 30, ‘洛阳’: 10, ‘焦作’: 9, ‘南阳’: 5, ‘许昌’: 5, ‘平顶山’: 3, ‘安阳’: 3, ‘商丘’: 2, ‘漯河’: 2, ‘新乡’: 2, ‘周口’: 2, ‘濮阳’: 2, ‘信阳’: 2, ‘开封’: 1, ‘三门峡’: 1, ‘济源’: 1}, ‘贵州’: {‘贵阳’: 21, ‘遵义’: 4, ‘安顺’: 2, ‘黔南’: 1, ‘六盘水’: 1}, ‘四川’: {‘成都’: 78, ‘绵阳’: 9, ‘乐山’: 6, ‘遂宁’: 6, ‘宜宾’: 4, ‘自贡’: 3, ‘德阳’: 3, ‘眉山’: 3, ‘泸州’: 2, ‘南充’: 2, ‘内江’: 1, ‘广安’: 1, ‘达州’: 1, ‘雅安’: 1, ‘资阳’: 1, ‘攀枝花’: 1, ‘阿坝’: 1, ‘凉山’: 1}, ‘重庆’: {‘重庆’: 52}, ‘内蒙古’: {‘包头’: 8, ‘鄂尔多斯’: 5, ‘呼和浩特’: 5, ‘赤峰’: 3, ‘乌海’: 2, ‘锡林郭勒’: 1, ‘乌兰察布’: 1, ‘通辽’: 1, ‘阿拉善’: 1}, ‘浙江’: {‘杭州’: 139, ‘宁波’: 77, ‘绍兴’: 56, ‘台州’: 50, ‘嘉兴’: 37, ‘金华’: 29, ‘湖州’: 24, ‘温州’: 20, ‘衢州’: 6, ‘丽水’: 3, ‘舟山’: 1}, ‘福建’: {‘厦门’: 47, ‘福州’: 44, ‘泉州’: 17, ‘南平’: 7, ‘漳州’: 5, ‘龙岩’: 5, ‘三明’: 4, ‘宁德’: 4, ‘莆田’: 2}, ‘广西’: {‘南宁’: 15, ‘桂林’: 7, ‘北海’: 6, ‘柳州’: 5, ‘梧州’: 2, ‘河池’: 1, ‘贺州’: 1, ‘贵港’: 1}, ‘上海’: {‘上海’: 322}, ‘河北’: {‘石家庄’: 17, ‘唐山’: 10, ‘保定’: 10, ‘沧州’: 5, ‘廊坊’: 4, ‘秦皇岛’: 3, ‘邢台’: 2, ‘邯郸’: 2, ‘衡水’: 2, ‘承德’: 2, ‘张家口’: 1}, ‘广东’: {‘深圳’: 305, ‘广州’: 102, ‘佛山’: 38, ‘汕头’: 33, ‘珠海’: 28, ‘东莞’: 27, ‘中山’: 22, ‘惠州’: 11, ‘江门’: 11, ‘潮州’: 7, ‘梅州’: 7, ‘揭阳’: 7, ‘肇庆’: 7, ‘韶关’: 3, ‘湛江’: 2, ‘阳江’: 2, ‘云浮’: 1, ‘台山’: 1, ‘茂名’: 1}, ‘天津’: {‘天津’: 52}, ‘湖南’: {‘长沙’: 59, ‘岳阳’: 10, ‘株洲’: 8, ‘益阳’: 6, ‘衡阳’: 5, ‘湘潭’: 4, ‘常德’: 4, ‘郴州’: 3, ‘怀化’: 2, ‘永州’: 2, ‘张家界’: 1, ‘湘西’: 1}, ‘辽宁’: {‘大连’: 30, ‘沈阳’: 23, ‘鞍山’: 8, ‘锦州’: 3, ‘辽阳’: 3, ‘阜新’: 2, ‘营口’: 2, ‘葫芦岛’: 2, ‘本溪’: 2, ‘盘锦’: 1, ‘丹东’: 1, ‘抚顺’: 1, ‘朝阳’: 1, ‘铁岭’: 1}, ‘江西’: {‘南昌’: 22, ‘新余’: 4, ‘赣州’: 4, ‘景德镇’: 4, ‘宜春’: 3, ‘上饶’: 3, ‘鹰潭’: 2, ‘抚州’: 1, ‘萍乡’: 1}, ‘陕西’: {‘西安’: 37, ‘宝鸡’: 5, ‘咸阳’: 3, ‘商洛’: 1, ‘延安’: 1, ‘汉中’: 1, ‘铜川’: 1, ‘渭南’: 1}, ‘黑龙江’: {‘哈尔滨’: 28, ‘齐齐哈尔’: 3, ‘牡丹江’: 2, ‘佳木斯’: 1, ‘鸡西’: 1, ‘大庆’: 1, ‘七台河’: 1, ‘伊春’: 1}, ‘云南’: {‘昆明’: 25, ‘曲靖’: 3, ‘临沧’: 1, ‘大理’: 1, ‘迪庆藏族自治州’: 1, ‘保山’: 1, ‘文山’: 1, ‘普洱’: 1, ‘丽江’: 1, ‘玉溪’: 1}, ‘海南’: {‘海口’: 27, ‘三亚’: 6, ‘昌江’: 1, ‘澄迈县’: 1}, ‘西藏’: {‘拉萨’: 15, ‘山南’: 2, ‘林芝’: 1}, ‘安徽’: {‘合肥’: 46, ‘芜湖’: 13, ‘马鞍山’: 7, ‘宣城’: 7, ‘铜陵’: 6, ‘淮北’: 4, ‘滁州’: 4, ‘蚌埠’: 3, ‘黄山’: 3, ‘安庆’: 3, ‘淮南’: 2, ‘六安’: 2, ‘亳州’: 2, ‘宁国’: 1, ‘池州’: 1, ‘阜阳’: 1}, ‘宁夏’: {‘银川’: 9, ‘石嘴山’: 3, ‘吴忠’: 2}, ‘新疆’: {‘乌鲁木齐’: 33, ‘昌吉’: 5, ‘克拉玛依’: 4, ‘石河子’: 3, ‘塔城’: 1, ‘阿克苏地区’: 1, ‘阿拉尔’: 1, ‘伊犁’: 1, ‘博尔塔拉’: 1, ‘巴音’: 1, ‘阿克苏’: 1, ‘和田’: 1, ‘喀什’: 1, ‘巴音郭楞’: 1}, ‘青海’: {‘西宁’: 9, ‘格尔木’: 1, ‘海西’: 1, ‘海东’: 1}}

代码如下：

#匿名函数中，按照字典的值之和排序。
lsds=dict(sorted(lsd.items(),key=lambda x:sum(x[1].values()),reverse=True))

效果如下：

lsds={‘广东’: {‘深圳’: 305, ‘广州’: 102, ‘佛山’: 38, ‘汕头’: 33, ‘珠海’: 28, ‘东莞’: 27, ‘中山’: 22, ‘惠州’: 11, ‘江门’: 11, ‘潮州’: 7, ‘梅州’: 7, ‘揭阳’: 7, ‘肇庆’: 7, ‘韶关’: 3, ‘湛江’: 2, ‘阳江’: 2, ‘云浮’: 1, ‘台山’: 1, ‘茂名’: 1}, ‘浙江’: {‘杭州’: 139, ‘宁波’: 77, ‘绍兴’: 56, ‘台州’: 50, ‘嘉兴’: 37, ‘金华’: 29, ‘湖州’: 24, ‘温州’: 20, ‘衢州’: 6, ‘丽水’: 3, ‘舟山’: 1}, ‘江苏’: {‘苏州’: 109, ‘南京’: 87, ‘无锡’: 77, ‘常州’: 43, ‘南通’: 33, ‘扬州’: 13, ‘镇江’: 13, ‘徐州’: 10, ‘连云港’: 7, ‘泰州’: 7, ‘盐城’: 6, ‘宿迁’: 3, ‘淮安’: 2, ‘张家港’: 1}, ‘北京’: {‘北京’: 325}, ‘上海’: {‘上海’: 322}, ‘山东’: {‘烟台’: 39, ‘青岛’: 36, ‘济南’: 26, ‘潍坊’: 24, ‘淄博’: 23, ‘威海’: 10, ‘济宁’: 9, ‘德州’: 9, ‘滨州’: 7, ‘东营’: 5, ‘临沂’: 4, ‘泰安’: 4, ‘聊城’: 4, ‘菏泽’: 2, ‘荣成’: 1, ‘莱芜’: 1, ‘日照’: 1, ‘枣庄’: 1}, ‘福建’: {‘厦门’: 47, ‘福州’: 44, ‘泉州’: 17, ‘南平’: 7, ‘漳州’: 5, ‘龙岩’: 5, ‘三明’: 4, ‘宁德’: 4, ‘莆田’: 2}, ‘四川’: {‘成都’: 78, ‘绵阳’: 9, ‘乐山’: 6, ‘遂宁’: 6, ‘宜宾’: 4, ‘自贡’: 3, ‘德阳’: 3, ‘眉山’: 3, ‘泸州’: 2, ‘南充’: 2, ‘内江’: 1, ‘广安’: 1, ‘达州’: 1, ‘雅安’: 1, ‘资阳’: 1, ‘攀枝花’: 1, ‘阿坝’: 1, ‘凉山’: 1}, ‘湖北’: {‘武汉’: 58, ‘荆州’: 8, ‘襄阳’: 8, ‘黄石’: 8, ‘宜昌’: 7, ‘荆门’: 4, ‘鄂州’: 3, ‘孝感’: 2, ‘潜江’: 2, ‘黄冈’: 1, ‘汉川’: 1, ‘仙桃’: 1, ‘咸宁’: 1, ‘随州’: 1, ‘十堰’: 1}, ‘湖南’: {‘长沙’: 59, ‘岳阳’: 10, ‘株洲’: 8, ‘益阳’: 6, ‘衡阳’: 5, ‘湘潭’: 4, ‘常德’: 4, ‘郴州’: 3, ‘怀化’: 2, ‘永州’: 2, ‘张家界’: 1, ‘湘西’: 1}, ‘安徽’: {‘合肥’: 46, ‘芜湖’: 13, ‘马鞍山’: 7, ‘宣城’: 7, ‘铜陵’: 6, ‘淮北’: 4, ‘滁州’: 4, ‘蚌埠’: 3, ‘黄山’: 3, ‘安庆’: 3, ‘淮南’: 2, ‘六安’: 2, ‘亳州’: 2, ‘宁国’: 1, ‘池州’: 1, ‘阜阳’: 1}, ‘河南’: {‘郑州’: 30, ‘洛阳’: 10, ‘焦作’: 9, ‘南阳’: 5, ‘许昌’: 5, ‘平顶山’: 3, ‘安阳’: 3, ‘商丘’: 2, ‘漯河’: 2, ‘新乡’: 2, ‘周口’: 2, ‘濮阳’: 2, ‘信阳’: 2, ‘开封’: 1, ‘三门峡’: 1, ‘济源’: 1}, ‘辽宁’: {‘大连’: 30, ‘沈阳’: 23, ‘鞍山’: 8, ‘锦州’: 3, ‘辽阳’: 3, ‘阜新’: 2, ‘营口’: 2, ‘葫芦岛’: 2, ‘本溪’: 2, ‘盘锦’: 1, ‘丹东’: 1, ‘抚顺’: 1, ‘朝阳’: 1, ‘铁岭’: 1}, ‘河北’: {‘石家庄’: 17, ‘唐山’: 10, ‘保定’: 10, ‘沧州’: 5, ‘廊坊’: 4, ‘秦皇岛’: 3, ‘邢台’: 2, ‘邯郸’: 2, ‘衡水’: 2, ‘承德’: 2, ‘张家口’: 1}, ‘新疆’: {‘乌鲁木齐’: 33, ‘昌吉’: 5, ‘克拉玛依’: 4, ‘石河子’: 3, ‘塔城’: 1, ‘阿克苏地区’: 1, ‘阿拉尔’: 1, ‘伊犁’: 1, ‘博尔塔拉’: 1, ‘巴音’: 1, ‘阿克苏’: 1, ‘和田’: 1, ‘喀什’: 1, ‘巴音郭楞’: 1}, ‘重庆’: {‘重庆’: 52}, ‘天津’: {‘天津’: 52}, ‘陕西’: {‘西安’: 37, ‘宝鸡’: 5, ‘咸阳’: 3, ‘商洛’: 1, ‘延安’: 1, ‘汉中’: 1, ‘铜川’: 1, ‘渭南’: 1}, ‘江西’: {‘南昌’: 22, ‘新余’: 4, ‘赣州’: 4, ‘景德镇’: 4, ‘宜春’: 3, ‘上饶’: 3, ‘鹰潭’: 2, ‘抚州’: 1, ‘萍乡’: 1}, ‘吉林’: {‘长春’: 25, ‘吉林’: 8, ‘通化’: 6, ‘延边’: 2, ‘辽源’: 1}, ‘山西’: {‘太原’: 19, ‘大同’: 4, ‘运城’: 4, ‘长治’: 2, ‘晋中’: 2, ‘临汾’: 2, ‘阳泉’: 2, ‘忻州’: 1, ‘吕梁’: 1, ‘晋城’: 1}, ‘广西’: {‘南宁’: 15, ‘桂林’: 7, ‘北海’: 6, ‘柳州’: 5, ‘梧州’: 2, ‘河池’: 1, ‘贺州’: 1, ‘贵港’: 1}, ‘黑龙江’: {‘哈尔滨’: 28, ‘齐齐哈尔’: 3, ‘牡丹江’: 2, ‘佳木斯’: 1, ‘鸡西’: 1, ‘大庆’: 1, ‘七台河’: 1, ‘伊春’: 1}, ‘云南’: {‘昆明’: 25, ‘曲靖’: 3, ‘临沧’: 1, ‘大理’: 1, ‘迪庆藏族自治州’: 1, ‘保山’: 1, ‘文山’: 1, ‘普洱’: 1, ‘丽江’: 1, ‘玉溪’: 1}, ‘海南’: {‘海口’: 27, ‘三亚’: 6, ‘昌江’: 1, ‘澄迈县’: 1}, ‘甘肃’: {‘兰州’: 20, ‘白银’: 3, ‘陇南’: 2, ‘武威’: 2, ‘酒泉’: 2, ‘嘉峪关’: 2, ‘天水’: 2}, ‘贵州’: {‘贵阳’: 21, ‘遵义’: 4, ‘安顺’: 2, ‘黔南’: 1, ‘六盘水’: 1}, ‘内蒙古’: {‘包头’: 8, ‘鄂尔多斯’: 5, ‘呼和浩特’: 5, ‘赤峰’: 3, ‘乌海’: 2, ‘锡林郭勒’: 1, ‘乌兰察布’: 1, ‘通辽’: 1, ‘阿拉善’: 1}, ‘西藏’: {‘拉萨’: 15, ‘山南’: 2, ‘林芝’: 1}, ‘宁夏’: {‘银川’: 9, ‘石嘴山’: 3, ‘吴忠’: 2}, ‘青海’: {‘西宁’: 9, ‘格尔木’: 1, ‘海西’: 1, ‘海东’: 1}}