maotai_stock = get_price(security="600519.XSHG", start_date="2021-06-30", end_date="2021-06-30", fields=None, skip_paused=False, fq='pre', count=None)
maotai_stock_close = maotai_stock['close'][0] # 茅台6.30收盘价
df_valuation_maotai = get_fundamentals(query(valuation).filter(income.code == '600519.XSHG'),  '2021-06-30') # 获取茅台总股本（万股）
maotai_capitalization = df_valuation_maotai['capitalization'][0]
maotai_market_cap = maotai_stock_close * maotai_capitalization * 10000 / 100000000
print(f"查询市值------> {df_valuation_maotai['market_cap'][0]} 亿元\n计算市值------->{maotai_market_cap} 亿元")