blender, python spiraling stairs

spiral-stairs.py

#Select the object you want as your step and choose the correct distance intervals on the last line
#your selected object should have a pivot point offset equal to the inner radius of your stair set spiral
import bpy
import mathutils

for x in range(0,100):#How many steps
    bpy.ops.object.duplicate()
    for obj in bpy.context.selected_objects:
        obj.name = "A"+str(x)
        obj.delta_location += mathutils.Vector((0, 0, 1))#distance between steps
        rot = x*0.2
        bpy.context.scene.objects.active.rotation_euler = (0, 0, rot)