ModuleNotFoundError: No module named 'pytest'

Question

import pytest


def test_main():
    assert 5!=5

if __name__ == "__main__":
    pytest.main()
    

在命令行又是可以正确找到虚拟环境pytest模块，在vscode里面运行提示找不到模块(vscode也是切换到虚拟环境得)，报错如下：

[Running] python -u "d:\MyPytest\test_sample.py"
Traceback (most recent call last):
  File "d:\MyPytest\test_sample.py", line 1, in <module>
    import pytest
ModuleNotFoundError: No module named 'pytest'

[Done] exited with code=1 in 0.176 seconds