我的Python代码更新ID =整数的MySQL表有什么问题?

>>> print x 
 [(1,), (2,), (3,), (4,), (5,), (6,), (7,), (8,), (9,), (10,)]

>>> for i in range(10):
...     if len(x)>0:
...             m = random.choice(x)
...             x.remove(m)
...             y = "%s" %m
...             z = int(y)
...             cur.execute("""UPDATE accounts SET column = 'YES' WHERE userid = %s""", (z, ))
>>> print x 
 [(1,), (2,), (3,), (4,), (5,), (6