How can I get the information of the instance?

[CongjiangCST]

Hello everyone,

I want to get the information of all the instance in the top-cell, such as name, location, width, height and pin-information, etc.
(eg:
cell name : r493/FE_OFC16857_n623
position : 126.920 26.180 127.490 27.580
type: BUF_X1
fanin pins: A
fanout pins: Z )

How can I get them from the gds files using python script?

Thanks