bpy.context

https://docs.blender.org/api/current/bpy.context.html

Note that all context values are readonly, but may be modified through the data API or by running operators

prop
object
active_object
selected_objects
mode

Contextオーバーライド

https://docs.blender.org/api/blender2.8/bpy.ops.html#overriding-context

# remove all objects in scene rather than the selected ones
import bpy
override = bpy.context.copy()
override['selected_objects'] = list(bpy.context.scene.objects)
bpy.ops.object.delete(override)