How to stack multiple Astropy Tables

Question

I have a for loop that generates several variables let say a, b, and c. I would like to vertically stack the variables after the for loop gone trough the loops. Here what I would like to do. (let say the variables are just numbers (1,2,3) for sake of example).

from astropy.table import Table
N1 = 3
N2 = 5
a = zeros((N2,N1))
b = zeros((N2,N1))
c = zeros((N2,N1))
for i in range(N2):    
   a[i] = range(N1)
   b[i] = range(N1)
   c[i] = range(N1)
   t  = Table([a[i], b[i], c[i]], names=('a', 'b', 'c'), meta={'name': 'first table'})

at the moment when I print t I get

 a   b   c 
--- --- ---
0.0 0.0 0.0
1.0 1.0 1.0
2.0 2.0 2.0

What I want to get is the following;

 a   b   c 
--- --- ---
0.0 0.0 0.0
1.0 1.0 1.0
2.0 2.0 2.0
0.0 0.0 0.0
1.0 1.0 1.0
2.0 2.0 2.0
0.0 0.0 0.0
1.0 1.0 1.0
2.0 2.0 2.0
0.0 0.0 0.0
1.0 1.0 1.0
2.0 2.0 2.0
0.0 0.0 0.0
1.0 1.0 1.0
2.0 2.0 2.0

Thank you very much for your help.

Answer 1

If you want for instance the number of rows repeat n=5 times you just need to use vstack , similar to numpy.vstack as following:

>>>from astropy.table import vstack
>>>t1=vstack([t,t,t,t,t])
>>>print t1

 a   b   c 
--- --- ---
0.0 0.0 0.0
1.0 1.0 1.0
2.0 2.0 2.0
0.0 0.0 0.0
1.0 1.0 1.0
2.0 2.0 2.0
0.0 0.0 0.0
1.0 1.0 1.0
2.0 2.0 2.0
0.0 0.0 0.0
1.0 1.0 1.0
2.0 2.0 2.0
0.0 0.0 0.0
1.0 1.0 1.0
2.0 2.0 2.0