def PrintDict(obj, nested_level=0, output=sys.stdout):
    """
    Print each dict key with indentions for readability.
    """

    spacing = '   '
    if type(obj) == dict:
        print >> output, '%s' % ((nested_level) * spacing)
        for k, v in obj.items():
            if hasattr(v, '__iter__'):
                print >> output, '%s%s:' % ((nested_level + 1) * spacing, k)
                PrintDict(v, nested_level + 1, output)
            else:
                print >> output, '%s%s: %s' % ((nested_level + 1) * spacing, k, v)

        print >> output, '%s' % (nested_level * spacing)

    elif type(obj) == list:
        print >> output, '%s[' % ((nested_level) * spacing)
        for v in obj:
            if hasattr(v, '__iter__'):
                PrintDict(v, nested_level + 1, output)
            else:
                print >> output, '%s%s' % ((nested_level + 1) * spacing, v)
        print >> output, '%s]' % ((nested_level) * spacing)

    else:
        print >> output, '%s%s' % (nested_level * spacing, obj)