Python numpy.savetxt() saves multidimensional array
1. numpy.column_stack() for column
import numpy
a = np.array([1,2,3,4])
b = np.array([5,6,7,8])
c = np.array([9,10,11,12])
numpy.savetxt('filename.txt', numpy.column_stack((a,b,c)))
2. np.row_stack() for row
import numpy
a = np.array([1,2,3,4])
b = np.array([5,6,7,8])
c = np.array([9,10,11,12])
numpy.savetxt('filename.txt', numpy.row_stack((a,b,c)))