为什么在导入myhdl时会引发错误？

Question

我已经在anaconda提示符中pip安装了myhdl，它成功了。但是当我导入myhdl时，它抛出了错误，不是“没有模块命名为myhdl”，而是这样：

Traceback (most recent call last):

File "D:\Anaconda3\lib\site-packages\IPython\core\interactiveshell.py", 
line 3267, in run_code exec(code_obj, self.user_global_ns, self.user_ns)

File "<ipython-input-17-e4990cfca0be>", line 1, in <module>
import myhdl

File "D:\Anaconda3\lib\site-packages\myhdl\__init__.py", line 162, in 
     <module>
from ._always_seq import always_seq, ResetSignal

File "D:\Anaconda3\lib\site-packages\myhdl\_always_seq.py", line 48
def __init__(self, val, active, async):
                                    ^
SyntaxError: invalid syntax

使用此功能会出错

 import myhdl