quick_script_runner.py

import bpy

bl_info = {
    "name": "quick script runner",
    "author": "zeffii",
    "version": (0, 1, 0),
    "blender": (2, 7, 5),
    "location": "3d view, sidebar (right)",
    "category": "3D View"
}

'''
# test file

import bpy
import random

x = random.randint(-6, 6)
y = random.randint(-6, 6)
z = random.randint(-6, 6)

bpy.ops.mesh.primitive_cube_add(radius=1, location=(x, y, z),)
'''


class GlobalScriptRunner(bpy.types.Operator):
    bl_idname = "view3d.global_script_runner"
    bl_label = "Global Script Runner"

    def execute(self, context):
        textblock_name = context.scene.global_script_to_run
        textblock = bpy.data.texts.get(textblock_name)
        if textblock:
            textblock_as_string = textblock.as_string()
            exec(textblock_as_string)
            return {'FINISHED'}
        else:
            return {'CANCELLED'}


class ScriptRunnerPanel(bpy.types.Panel):
    """Creates a Panel in the Object properties window"""
    bl_label = "Script Runner"
    bl_idname = "SCENE_PT_script_runner"
    bl_space_type = 'VIEW_3D'
    bl_region_type = 'UI'
    # bl_context = "object"

    def draw(self, context):
        layout = self.layout
        layout.label('script to run from shortcut')
        layout.prop_search(context.scene, "global_script_to_run",  bpy.data, "texts")


def register():
    bpy.types.Scene.global_script_to_run = bpy.props.StringProperty()
    bpy.utils.register_class(GlobalScriptRunner)
    bpy.utils.register_class(ScriptRunnerPanel)


def unregister():
    bpy.utils.unregister_class(GlobalScriptRunner)
    bpy.utils.unregister_class(ScriptRunnerPanel)
    del bpy.types.Scene.global_script_to_run