Saving numpy array to txt file row wise
If numpy >= 1.5, you can do:
# note that the filename is enclosed with double quotes,
# example "filename.txt"
numpy.savetxt("filename", a, newline=" ")Edit
several 1D arrays with same length
a = numpy.array([1,2,3])b = numpy.array([4,5,6])numpy.savetxt(filename, (a,b), fmt="%d")# gives:# 1 2 3# 4 5 6several 1D arrays with variable length
a = numpy.array([1,2,3])b = numpy.array([4,5])with open(filename,"w") as f: f.write("\n".join(" ".join(map(str, x)) for x in (a,b)))# gives:# 1 2 3# 4 5