Where are the Python library

1

I’m looking for the library instruction, so can help create product detail report, inventory daily report, sales etc.

Thanks
Qi

2

Welcome to ERPNext,

Possibly you refer to this Library Management System example Frappe Framework Tutorial

The report docs include these
https://frappe.io/docs/user/en/reports
https://docs.erpnext.com/docs/user/manual/en/customize-erpnext/articles/making-custom-reports

https://docs.erpnext.com/docs/user/videos/learn/report-builder.html