[FEATURE]: Code style need to be improve

[xiaohu4313888]

Is there an existing issue for this?

• [X] I have searched the existing issues

Is your feature request related to a problem? Please describe.

A good coding style, including codes consistent and high quality, is very important for a good open-source project. From pylint we can see warning like Bad indentation, line is too long and Missing class docstring.
I will fix these problems in orm as soon as possible.

Describe the solution you'd like

No response

Describe alternatives you've considered

No response

Anything else?

No response

[xiaohu4313888]

/assign

[DingQK]

Hi! Does this issue need more hand? I really want to contribute~ Thank you!

[XuanYang-cn]

/unassign @xiaohu4313888 /assign