mysql - Python Mariadb MYSQL 类型转换错误 不正确的双值 : '' 23 7'' for column `wtx520` .`weather` .`value` at row 1

Question

我有一个 Raspi Python 项目，我想在数据库中存储天气传感器的值。这些值以字符串形式出现。我能够将它分开，但我犯了一个愚蠢的错误，无法存储这些值。 代码

mport mysql.connector
import re
db =mysql.connector.connect(host='localhost', port=3306, db='wtx520', password='xxx', user='xxx')
#port 3307 für synology
#example string
line ="0r1,Dn=237D,Dm=237D,Dx=237D,Sn=0.1N,Sm=0.2N,Sx=0.3NLq@"
pair = line.split(",")

for i in pair:
    value = i.split("=")

    print(value[0])
    if len(value)>1: 

     decvalue =re.findall("\d*\.?\d+", value[1])

     key= value[0]
     #remove brackets around dec value
     inserttuple=(key,str(decvalue).replace('[','').replace(']',''))
     #inserttuple=(str(key), "237") it works with this static example
     sql_insert_query = """INSERT INTO weather (valuekey, value) VALUES (%s,%s)"""

     mycursor = db.cursor()
     result  = mycursor.execute(sql_insert_query,inserttuple)
     db.commit()

数据库表定义:

CREATE TABLE wtx520.weather (
  ts TIMESTAMP NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,
  value DOUBLE DEFAULT NULL,
  valuekey VARCHAR(4) DEFAULT NULL
)
ENGINE = INNODB,
AVG_ROW_LENGTH = 1365,
CHARACTER SET utf8,
COLLATE utf8_general_ci;

错误: Nachricht = 1366 (22007):不正确的 double 值:第 1 行的 wtx520.weather.value 列为“237” 奎勒= 斯塔佩鲁贝尔瓦赫: 文件“C:\Users\Marcel\source\repos\wtx520-azure\wtx520-azure\wtx520_azure.py”，第 22 行，位于 结果 = mycursor.execute(sql_insert_query,inserttuple)

任何帮助表示赞赏

Answer 1

解决方案是:

inserttuple=(key,str(decvalue).replace('[','').replace(']','').replace("'",''))

感谢您的提示!