added data area change script (#207)

#!/usr/bin/env python

import argparse

from glob import glob

from os import path

import re

parser = argparse.ArgumentParser()

parser.add_argument('mk_path', action='store', help='Path containing metakernel (*.tm) files.')

parser.add_argument('new_data_path', action='store', help='new data path containing kernel, this path will overwrite the current data path in the metakernels')

args = parser.parse_args()

mks = glob(path.join(args.mk_path,'*.tm'))

for mk in mks:

    with open(mk, 'r') as f:

        lines = f.readlines()

    lines_to_change = []

    for i,l in enumerate(lines):

        match = re.search('PATH_VALUES\s*=', l)

        if match:

            lines_to_change.append(i)

    if not lines_to_change:

        print(f'No path values in {mk}')

    for i in lines_to_change:

        lines[i] = f'      PATH_VALUES     = ( \'{new_data_dir}\' )\n'

    with open(mk, 'w') as f:

        f.write(''.join(lines))