def copy_template(app_template, copy_to, project_name, app_name):
    import shutil

    copy_migrations = True if VERSION[:2] >= (1, 7) else False
    app_template = os.path.normpath(app_template)
    # walks the template structure and copies it
    for d, subdirs, files in os.walk(app_template):
        relative_dir = d[len(app_template) + 1:]
        d_new = os.path.join(copy_to, relative_dir).replace('app_name', app_name)
        if relative_dir and not os.path.exists(d_new):
            os.mkdir(d_new)
        for i, subdir in enumerate(subdirs):
            if subdir.startswith('.'):
                del subdirs[i]
            elif subdir.startswith('migrations') and not copy_migrations:
                del subdirs[i]
        replacements = {'app_name': app_name, 'project_name': project_name}
        replacements.update(REPLACEMENTS)
        for f in files:
            if f.endswith('.pyc') or f.startswith('.DS_Store'):
                continue
            path_old = os.path.join(d, f)
            path_new = os.path.join(d_new, f.replace('app_name', app_name))
            if os.path.exists(path_new):
                path_new = os.path.join(d_new, f)
                if os.path.exists(path_new):
                    continue
            if path_new.endswith('.tmpl'):
                path_new = path_new[:-5]
            fp_old = open(path_old, 'r')
            fp_new = open(path_new, 'w')
            fp_new.write(Template(fp_old.read()).render(Context(replacements)))
            fp_old.close()
            fp_new.close()
            try:
                shutil.copymode(path_old, path_new)
                _make_writeable(path_new)
            except OSError:
                sys.stderr.write("Notice: Couldn't set permission bits on %s. You're probably using an uncommon filesystem setup. No problem.\n" % path_new)
copies the specified template directory to the copy_to location
dataset/ETHPy150Open django-extensions/django-extensions/django_extensions/management/commands/create_app.py/copy_template