my list has value such as

m=[['na','1','2']['ka','31','45']['ra','3','5']

d=0
r=2

t=m[d][r]
print t         # this is givin number i.e 2

Now when I use this value

u=[]
u=m[t]

I am getting an err msg saying type error list does take str values...

i want to use like this how can i convert that t into a integer??

please suggest..

thanks..