FEATURE: pandas.Series.query()(#22347)
Hello @yaolan4! Thanks for opening this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:

* In the file [`pandas/conftest.py`](https://github.com/pandas-dev/pandas/blob/5a263b459795d710dcb9b452ec7a1177ca10f37c/pandas/conftest.py):

> [Line 768:20](https://github.com/pandas-dev/pandas/blob/5a263b459795d710dcb9b452ec7a1177ca10f37c/pandas/conftest.py#L768): [W604](https://duckduckgo.com/?q=pep8%20W604) backticks are deprecated, use 'repr()'
> [Line 768:28](https://github.com/pandas-dev/pandas/blob/5a263b459795d710dcb9b452ec7a1177ca10f37c/pandas/conftest.py#L768): [E226](https://duckduckgo.com/?q=pep8%20E226) missing whitespace around arithmetic operator
> [Line 1201:1](https://github.com/pandas-dev/pandas/blob/5a263b459795d710dcb9b452ec7a1177ca10f37c/pandas/conftest.py#L1201): [E305](https://duckduckgo.com/?q=pep8%20E305) expected 2 blank lines after class or function definition, found 1
> [Line 1216:9](https://github.com/pandas-dev/pandas/blob/5a263b459795d710dcb9b452ec7a1177ca10f37c/pandas/conftest.py#L1216): [E113](https://duckduckgo.com/?q=pep8%20E113) unexpected indentation
> [Line 1216:53](https://github.com/pandas-dev/pandas/blob/5a263b459795d710dcb9b452ec7a1177ca10f37c/pandas/conftest.py#L1216): [E211](https://duckduckgo.com/?q=pep8%20E211) whitespace before '('









