def _last_stack_str():
    "Print stack trace from call that didn't originate from here"
    stack = extract_stack()
    for s in stack[::(- 1)]:
        if (op.join('vispy', 'gloo', 'buffer.py') not in __file__):
            break
    return format_list([s])[0]
Print stack trace from call that didn't originate from here
def _last_stack_str():
    
    stack = extract_stack()
    for s in stack[::(- 1)]:
        if (op.join('vispy', 'gloo', 'buffer.py') not in __file__):
            break
    return format_list([s])[0]