Python里面好像没法运行天勤？

已经pip安装了天勤，然后Python运行
from tqsdk import TqApi, TqAuth

得到的提示是：

D:\Python\DC\venv\Scripts\python.exe D:/Python/DC/tmp.py
Traceback (most recent call last):
File “D:/Python/DC/tmp.py”, line 1, in <module>
from tqsdk import TqApi, TqAuth
ModuleNotFoundError: No module named ‘tqsdk’

Process finished with exit code 1

是什么原因?