执行上述的自家 apk 测试脚本后，会弹出这个报错，有什么解决办法？

Traceback (most recent call last):
  File "e:\Test\Python\Script\macaca.py", line 4, in <module>
    from macaca import WebDriver
  File "e:\Test\Python\Script\macaca.py", line 4, in <module>
    from macaca import WebDriver
ImportError: cannot import name WebDriver