SQLite OperationalError near "?"

[Hexade]

Hello

I would like to use the safe "?" placeholder in my SQLite requests but
I got the following error:

Traceback (most recent call last):
  (...)
  cursor.execute("SELECT ? FROM ? WHERE name = ? ", (key, self.table,
self.name))
OperationalError: near "?": syntax error

key, self.table and self.name are standart strings.

Any idea about how to solve this problem ?

Thanks in advance,

Hexade