No module named 'imp' [duplicate]

I have to extend the code that an ancient student done. After installing all the library needed I finally tried the code and got this error :

$ ./mainTraceback (most recent call last):  File "/usr/lib/python3.4/tkinter/__init__.py", line 39, in <module>    import _tkinter  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2237, in _find_and_load    return _find_and_load_unlocked(name, import_)  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2226, in _find_and_load_unlocked    module = _SpecMethods(spec)._load_unlocked()  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 1191, in _load_unlocked    return self._load_backward_compatible()  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 1161, in _load_backward_compatible    spec.loader.load_module(spec.name)  File "ExtensionLoader__tkinter.py", line 22, in <module>  File "ExtensionLoader__tkinter.py", line 3, in __bootstrap__  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2237, in _find_and_load    return _find_and_load_unlocked(name, import_)  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2224, in _find_and_load_unlocked    raise ImportError(_ERR_MSG.format(name), name=name)ImportError: No module named 'imp'During handling of the above exception, another exception occurred:Traceback (most recent call last):  File "/usr/local/lib/python3.4/dist-packages/cx_Freeze-4.3.4-py3.4-linux-x86_64.egg/cx_Freeze/initscripts/Console.py", line 27, in <module>  File "main.py", line 13, in <module>  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2237, in _find_and_load    return _find_and_load_unlocked(name, import_)  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2226, in _find_and_load_unlocked    module = _SpecMethods(spec)._load_unlocked()  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 1191, in _load_unlocked    return self._load_backward_compatible()  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 1161, in _load_backward_compatible    spec.loader.load_module(spec.name)  File "/home/aitech/Scrivania/folder_test/GUI_videoServer/mainFrame.py", line 4, in <module>  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2237, in _find_and_load    return _find_and_load_unlocked(name, import_)  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 2226, in _find_and_load_unlocked    module = _SpecMethods(spec)._load_unlocked()  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 1191, in _load_unlocked    return self._load_backward_compatible()  File "/usr/lib/python3.4/importlib/_bootstrap.py", line 1161, in _load_backward_compatible    spec.loader.load_module(spec.name)  File "/usr/lib/python3.4/tkinter/__init__.py", line 41, in <module>    raise ImportError(str(msg) +', please install the python3-tk package')ImportError: No module named 'imp', please install the python3-tk package

I don't think there is an error in the code as he is already used.I well installed python3-tk package, I can use it in command code.In the setting.py of the project there is already the line 'django_admin_bootstrapped' before 'django.contrib.admin' in INSTALLED_APPS = ( )

I am on Ubuntu :

$ lsb_release -aNo LSB modules are available.Distributor ID: UbuntuDescription:    Ubuntu 14.04.5 LTSRelease:    14.04Codename:   trusty

I am really lost, if someone could help me, thank you in advance.