Array of arrays (python/numpy)

Seems strange that you would write arrays without commas (is that a matlab syntax?)

Have you tried going through numpy's documentaion on multi-dimensional arrays?

It seems numpy has a "python-like" append method to add items to a numpy n-dimensional array:

p = np.array([[1,2],[3,4]])

p = np.append(p, [[5,6]], 0)

p = np.append(p, [[7],[8],[9]],1)

p

array([[1, 2, 7], [3, 4, 8], [5, 6, 9]])

It has also been answered already...

Edit: from the site for matlab users: You could use a matrix constructor which takes a string in the form of a matrix matlab literal:

mat("1 2 3; 4 5 6")

or

matrix("[1 2 3; 4 5 6]")

Please give it a try and tell me how it goes

If the file is only numerical values separated by tabs, try using the csv library: http://docs.python.org/library/csv.html (you can set the delimiter to '\t')

If you have a textual file in which every line represents a row in a matrix and has integers separated by spaces\tabs, wrapped by a 'arrayname = [...]' syntax, you should do something like:

import re
f = open("your-filename", 'rb')
result_matrix = []
for line in f.readlines():
    match = re.match(r'\s*\w+\s+\=\s+\[(.*?)\]\s*', line)
    if match is None:
        pass # line syntax is wrong - ignore the line
    values_as_strings = match.group(1).split()
    result_matrix.append(map(int, values_as_strings))