import baostock as bs
import pandas as pd

# 登陆系统
lg = bs.login()
# 显示登陆返回信息
print('login respond error_code:'+lg.error_code)
print('login respond  error_msg:'+lg.error_msg)

# 获取贷款利率
rs = bs.query_loan_rate_data(start_date="2010-01-01", end_date="2015-12-31")
print('query_loan_rate_data respond error_code:'+rs.error_code)
print('query_loan_rate_data respond  error_msg:'+rs.error_msg)

# 打印结果集
data_list = []
while (rs.error_code == '0') & rs.next():
    # 获取一条记录，将记录合并在一起
    data_list.append(rs.get_row_data())
result = pd.DataFrame(data_list, columns=rs.fields)
# 结果集输出到csv文件
result.to_csv("D:/loan_rate.csv", encoding="gbk", index=False)
print(result)

# 登出系统
bs.logout()