SQL Date Variables in Python

Question

I am writing a query inside a Python script.The query is as follows:

cur = conn.cursor()
query1 = """select max(date_time) from tablename"""
cur.execute(queryy1)
conn.commit()
rows = cur.fetchall()
print rows

Until here the code works fine and gives me the date in some format of the kind datetime.datetime[...] Now,I want to use this variable 'rows' in another sql query,say,of the following kind:

query2="""insert into table xyz(select * from abc where date_time = '%s')"""%(rows)
cur.execute(query2)

This gives me an error which is as follows:

DataError:invalid input syntax for type timestamp : "[((datetime.datetime(2014,6,6,23,0),)]"    

I am totally new to learning Python. Any help would be appreciated.

I tried the following and it worked:

query2 ="""insert into table xyz(select * from abc where date_time = %s)"""
cur.execute(query2,(rows))

Answer 1

I tried this and now it worked

query2 ="""insert into table xyz(select * from abc where date_time = %s)"""
cur.execute(query2,(rows))

Though, I don't know why it worked and how is it different from what I was trying earlier