A simple experimental operator for messing with matrix basics.

matrix_op.py

"""
matrix_op.py
A simple experimental operator for messing with matrix basics.
"""

import bpy
from bpy.props import FloatProperty
from math import pi

class MatrixOp(bpy.types.Operator):
    '''Tooltip'''
    bl_idname = "object.matrix_op"
    bl_label = "Matrix Object Operator"
    bl_options = {'REGISTER', 'UNDO'}
    influence = FloatProperty(name="Influence", default=0, min=0, max= pi)

    @classmethod
    def poll(cls, context):
        return context.active_object is not None

    def execute(self, context):
        obs = context.selected_objects
        lead_ob = context.active_object
        
        obs = [ob for ob in context.selected_objects if ob != lead_ob]
        for ob in obs:
            lead_ob.matrix_world += (self.influence * ob.matrix_world) 
        return {'FINISHED'}


def register():
    bpy.utils.register_class(MatrixOp)


def unregister():
    bpy.utils.unregister_class(MatrixOp)


if __name__ == "__main__":
    register()