Question

我的脚本通常会正确地将数据插入到MySQL数据库中，但是，当我将其安排为每10秒运行一次时（此调度每隔10秒调用一次此脚本），它会在大约50％的时间内崩溃。

有什么建议吗？

some unimportant code here

# Calculate pulse length
elapsed = stop-start

# Distance pulse travelled in that time is time
# multiplied by the speed of sound (cm/s)
distance = elapsed * speedSound

# That was the distance there and back so halve the value
distance = distance / 2
distance = '{:f}'.format(distance)

    print(distance)

time = time.strftime('%Y-%m-%d %H:%M:%S')
print(time)
# Open database connection
db = MySQLdb.connect("192.168.2.3","sonic","123456","Pi" )


cursor = db.cursor()


sql = "INSERT INTO UltraSonic (distance, time) VALUES (%s, %s)"

try:

    cursor.execute(sql, (distance, time))

    db.commit()

# Rollback in case there is any error
#   db.rollback()
except MySQLdb.IntegrityError:
    logging.warn("failed to insert values %s, %s", distance, time)
# disconnect from server
finally:
    db.close()
print ("Ok")

Answer 1

问题出在DB表中，Key设置为PRI，什么不允许重复输入，这是我需要的。

删除PRI解决了这个问题。谢谢joeb !!

警告：root：无法插入值 - 插入并不总是成功到mysql

1 个答案: