Python interactive console which automatically reload modules

I just started to program Python. As my first application I implemented an interactive console which automatically python modules before a new code block is evaluated. Here is the code:

### module "module_reloading_console.py"
import sys
import code
import imp
import readline
import os

class ModuleReloadingConsole(code.InteractiveConsole):

    def __init__(self):
        super().__init__()
        readline.parse_and_bind("tab: complete")
        self.stored_modifier_times = {}
        self.check_modules_for_reload()

    def runcode(self, code):
        self.check_modules_for_reload()
        super().runcode(code)
        self.check_modules_for_reload() # maybe new modules are loaded

    def check_modules_for_reload(self):
        for module_name, module in sys.modules.items():
            if hasattr(module, '__file__'):
                module_modifier_time = os.path.getmtime(module.__file__)

                if module_name in self.stored_modifier_times:
                    if module_modifier_time > self.stored_modifier_times[module_name]:
                        imp.reload(module)
                    self.stored_modifier_times[module_name] = module_modifier_time
                else:
                    self.stored_modifier_times[module_name] = module_modifier_time

ModuleReloadingConsole().interact("Welcome to ModuleReloadingConsole")

Usage:

~: python3 module_reloading_console.py 
Welcome to ModuleReloadingConsole
>>> import test
>>> test.foo
23
>>> test.foo # in the meanwhile change foo to '42' in test.py
42

Because I am really new to Python I want to now which improvements you have for the above code. Are there common Python conventions I have not considered?

marginal note: this code recipe (automatically upgrade class instances on reload()) would be a good improvement. Maybe also this article about dynamically reloading a python code might improve the code...