webdriver 操作IE窗口大小自定义报错，求助

tongruiju

刚接触python，工作需要用到对IE窗口大小的操作，根据网上的例子，最大化OK，自定义窗口大小时报错，
示例代码如下：

from selenium import webdriver
import time
dr = webdriver.Ie()
time.sleep(3)
dr.set_window_size(1300,800)

报错信息如下：
Traceback (most recent call last):
  File "C:\Users\tong\Desktop\py\max_min.py", line 8, in <module>
    dr.set_window_size(1300,800)
  File "C:\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 969, in set_window_size
    self.set_window_rect(width=int(width), height=int(height))
  File "C:\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 1061, in set_window_rect
    "height": height})['value']
  File "C:\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 311, in execute
    self.error_handler.check_response(response)
  File "C:\Python36\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 237, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.InvalidArgumentException: Message: x must be a numeric parameter.

请帮忙看看是啥原因？

ba21

模块没有正确安装。我这测试OK