def copy_helper(style, app_or_project, name, directory, other_name=''):
    """
    Copies either a Django application layout template or a Django project
    layout template into the specified directory.

    """
    # style -- A color style object (see django.core.management.color).
    # app_or_project -- The string 'app' or 'project'.
    # name -- The name of the application or project.
    # directory -- The directory to which the layout template should be copied.
    # other_name -- When copying an application layout, this should be the name
    #               of the project.
    import re
    import shutil
    other = {'project': 'app', 'app': 'project'}[app_or_project]
    if not re.search(r'^[_a-zA-Z]\w*$', name): # If it's not a valid directory name.
        # Provide a smart error message, depending on the error.
        if not re.search(r'^[_a-zA-Z]', name):
            message = 'make sure the name begins with a letter or underscore'
        else:
            message = 'use only numbers, letters and underscores'
        raise CommandError("%r is not a valid %s name. Please %s." % (name, app_or_project, message))
    top_dir = os.path.join(directory, name)
    try:
        os.mkdir(top_dir)
    except __HOLE__, e:
        raise CommandError(e)

    # Determine where the app or project templates are. Use
    # django.__path__[0] because we don't know into which directory
    # django has been installed.
    template_dir = os.path.join(django.__path__[0], 'conf', '%s_template' % app_or_project)

    for d, subdirs, files in os.walk(template_dir):
        relative_dir = d[len(template_dir)+1:].replace('%s_name' % app_or_project, name)
        if relative_dir:
            os.mkdir(os.path.join(top_dir, relative_dir))
        for subdir in subdirs[:]:
            if subdir.startswith('.'):
                subdirs.remove(subdir)
        for f in files:
            if not f.endswith('.py'):
                # Ignore .pyc, .pyo, .py.class etc, as they cause various
                # breakages.
                continue
            path_old = os.path.join(d, f)
            path_new = os.path.join(top_dir, relative_dir, f.replace('%s_name' % app_or_project, name))
            fp_old = open(path_old, 'r')
            fp_new = open(path_new, 'w')
            fp_new.write(fp_old.read().replace('{{ %s_name }}' % app_or_project, name).replace('{{ %s_name }}' % other, other_name))
            fp_old.close()
            fp_new.close()
            try:
                shutil.copymode(path_old, path_new)
                _make_writeable(path_new)
            except OSError:
                sys.stderr.write(style.NOTICE("Notice: Couldn't set permission bits on %s. You're probably using an uncommon filesystem setup. No problem.\n" % path_new))
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/django/core/management/base.py/copy_helper