arcpy - Python script to read coordinate system of an input feature class?

How to read the coordinate system of an input feature class in python script.

How we can use "Describe()" function and tool validator for that purpose

Answer

you can do lots of things with Describe() function as Calvin mentioned like spatialReference.. get more information here.

import arcpy
dataset = r"c:\features.shp"
desc = arcpy.Describe(dataset)

extent = desc.extent
spatialReference = desc.spatialReference
name = desc.name

dataType = desc.dataType

i hope it helps you..