将字符串格式的日期时间插入我的数据库导致我出现此错误.任何解决方案

Question

脚本正在正确读取字符串，但它似乎无法进行并插入到数据库中。

这是我的一个家庭项目。我使用的是RasPi 3 ModelB +。

a = input('Scan Card: ')
now = datetime.strftime('%H:%M:%S')
#This is the insert line
tapped = "INSERT INTO log (rfid, taptime) VALUES (%s, %s)" %(a, now)
t = conn.cursor()
t.execute(tapped)
conn.commit()

Traceback (most recent call last):
  File "door.py", line 54, in <module>
    t.execute(tapped)
  File "/usr/local/lib/python2.7/dist-packages/pymysql/cursors.py", line 170, in execute
    result = self._query(query)
  File "/usr/local/lib/python2.7/dist-packages/pymysql/cursors.py", line 328, in _query
    conn.query(q)
  File "/usr/local/lib/python2.7/dist-packages/pymysql/connections.py", line 517, in query
    self._affected_rows = self._read_query_result(unbuffered=unbuffered)
  File "/usr/local/lib/python2.7/dist-packages/pymysql/connections.py", line 732, in _read_query_result
    result.read()
  File "/usr/local/lib/python2.7/dist-packages/pymysql/connections.py", line 1075, in read
    first_packet = self.connection._read_packet()
  File "/usr/local/lib/python2.7/dist-packages/pymysql/connections.py", line 684, in _read_packet
    packet.check_error()
  File "/usr/local/lib/python2.7/dist-packages/pymysql/protocol.py", line 220, in check_error
    err.raise_mysql_exception(self._data)
  File "/usr/local/lib/python2.7/dist-packages/pymysql/err.py", line 109, in raise_mysql_exception
    raise errorclass(errno, errval)
pymysql.err.ProgrammingError: (1064, u"You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ':40:44)' at line 1")

我只想要点击卡的日志数据库。

Answer 1

不应使用字符串替换，而应在执行中将值作为参数传递：

tapped = "INSERT INTO log (rfid, taptime) VALUES (%s, %s)")
t = conn.cursor()
t.execute(tapped, (a, now))

Answer 2

我不确定，但错误在这里

now = datetime.strftime('%H：%M：%S'(

问题是你使用的是 H、M 和 S。尝试：使用数值的日期("Y-m-d H：i：s"(

您必须以 24 小时格式执行此操作。