python sql in %问题

In[1]:secucode 
Out[1]:('002604',
     '002645',
     '002702',
     '002771',
     '300205',
     '300264',
     '300322')
In[2]: type(secucode)
Out[2]: tuple

In[3]:sql_date = "SELECT B.ListDate FROM SecuMain A,LC_AShareIPO B WHERE A.InnerCode = B.InnerCode AND A.SecuCode in %s" % secucode

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-42-3c7a28973a6f> in <module>()
----> 1 sql_date = "SELECT B.ListDate FROM SecuMain A,LC_AShareIPO B WHERE A.InnerCode = B.InnerCode AND A.SecuCode in %s" % secucode

TypeError: not all arguments converted during string formatting

查询一堆股票的上市时间，所以用了in，secucode类型为tuple,但是查询会报错，求问该怎么解决