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通过命令行参数还可以实现关闭所有告警，比如如下代码，这里人工抛出告警。
```python
import warnings

def test_demo1():
    print("in test_demo1 ...")
    warnings.warn(SyntaxWarning("warning，used to test..."))
    assert 1==1

def test_demo2():
    print("in test_demo2 ...")
    warnings.warn(UserWarning("warning，used to demo..."))
    assert 1==1
```
执行结果如下，可以看出这里报出了两条告警信息。
```bash
(demo-HCIhX0Hq) E:\demo>pytest -s
=================== test session starts ===================
platform win32 -- Python 3.7.9, pytest-7.2.0, pluggy-1.0.0
rootdir: E:\demo
plugins: assume-2.4.3, rerunfailures-10.2
collected 2 items

test_demo.py in test_demo1 ...
.in test_demo2 ...
.

==================== warnings summary =====================
test_demo.py::test_demo1
  E:\demo\test_demo.py:5: SyntaxWarning: warning，used to test...
    warnings.warn(SyntaxWarning("warning，used to test..."))

test_demo.py::test_demo2
  E:\demo\test_demo.py:10: UserWarning: warning，used to demo...
    warnings.warn(UserWarning("warning，used to demo..."))

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
============== 2 passed, 2 warnings in 0.02s ==============

(demo-HCIhX0Hq) E:\demo>
```
在命令行使用--disable-warnings 参数即可关闭告警显示，如下所示，这里虽然结果中还显示有2条搞定，但是在会回显中具体告警内容不再显示了。
```bash
(demo-HCIhX0Hq) E:\demo>pytest --disable-warnings
=================== test session starts ===================
platform win32 -- Python 3.7.9, pytest-7.2.0, pluggy-1.0.0
rootdir: E:\demo
plugins: assume-2.4.3, rerunfailures-10.2
collected 2 items

test_demo.py ..                                      [100%]

============== 2 passed, 2 warnings in 0.02s ==============

(demo-HCIhX0Hq) E:\demo>
```
通过在命令行中使用如下参数 -p no:warnings，则可以彻底关闭告警，如下所示，此时结果中根本不会有告警内容的显示以及告警结果的显示。
```bash
(demo-HCIhX0Hq) E:\demo>pytest -p no:warnings
=================== test session starts ===================
platform win32 -- Python 3.7.9, pytest-7.2.0, pluggy-1.0.0
rootdir: E:\demo
plugins: assume-2.4.3, rerunfailures-10.2
collected 2 items

test_demo.py ..                                      [100%]

==================== 2 passed in 0.02s ====================

(demo-HCIhX0Hq) E:\demo>

```

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