需求：保存数据到MySQL

安装pymysql

pip install pymysql

保存数据模块

from pymysql import connect
from pymysql.cursors import DictCursor

# 建立连接
conn = connect(
    host="localhost",
    user="root",
    password="root",
    database="db_transmitter",
    port=3306,
    cursorclass=DictCursor,
)

# 获取游标
c = conn.cursor()


def save_data(Transmitter_number, Date_time, Update_time, Pressure, Temperature, State):
    sql = """
        create table %s(
        id int primary key auto_increment,
        Date_time datetime not null,
        Update_time datetime,
        Pressure float,
        Temperature float,
        State varchar(200)
        )  
    """ % Transmitter_number

    items = {
        'Date_time': Date_time,
        'Update_time': Update_time,
        'Pressure': Pressure,
        'Temperature': Temperature,
        'State': State
    }
    insert_values = ",".join(["%({})s".format(key) for key in items])
    save_sql = 'insert into %s(Date_time, Update_time, Pressure, Temperature, State) values(%s)' % (
        Transmitter_number, insert_values)

    print(save_sql)
    c.execute('show tables')
    tb_list = c.fetchall()
    print(tb_list)
    if {'Tables_in_db_transmitter': Transmitter_number} not in tb_list:
        # 表不存在先创建数据表，然后添加数据
        c.execute(sql)
        c.execute(save_sql, args=items)
        conn.commit()

    else:
        # 表存在直接添加数据
        c.execute(save_sql, args=items)
        conn.commit()

    c.close()
    conn.close()