同じディレクトリ内のファイルをimportできない。

Djangoでアプリケーションを作成しているのですが、同じディレクトリ内で作成したsample.py内の関数を別のファイルにimportしたいのですが、下記のエラーが出てしまい、import出来ません。

Python
1#Views.py
2import sample

解決方法をご教示頂きたいです。

Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7f3605e4a6a8>
web_1  | Traceback (most recent call last):
web_1  |   File "/usr/local/lib/python3.6/site-packages/django/utils/autoreload.py", line 227, in wrapper
web_1  |     fn(*args, **kwargs)
web_1  |   File "/usr/local/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 125, in inner_run
web_1  |     self.check(display_num_errors=True)
web_1  |   File "/usr/local/lib/python3.6/site-packages/django/core/management/base.py", line 359, in check
web_1  |     include_deployment_checks=include_deployment_checks,
web_1  |   File "/usr/local/lib/python3.6/site-packages/django/core/management/base.py", line 346, in _run_checks
web_1  |     return checks.run_checks(**kwargs)
web_1  |   File "/usr/local/lib/python3.6/site-packages/django/core/checks/registry.py", line 81, in run_checks
web_1  |     new_errors = check(app_configs=app_configs)
web_1  |   File "/usr/local/lib/python3.6/site-packages/django/core/checks/urls.py", line 16, in check_url_config
web_1  |     return check_resolver(resolver)
web_1  |   File "/usr/local/lib/python3.6/site-packages/django/core/checks/urls.py", line 26, in check_resolver
web_1  |     return check_method()
web_1  |   File "/usr/local/lib/python3.6/site-packages/django/urls/resolvers.py", line 254, in check
web_1  |     for pattern in self.url_patterns:
web_1  |   File "/usr/local/lib/python3.6/site-packages/django/utils/functional.py", line 35, in __get__
web_1  |     res = instance.__dict__[self.name] = self.func(instance)
web_1  |   File "/usr/local/lib/python3.6/site-packages/django/urls/resolvers.py", line 405, in url_patterns
web_1  |     patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
web_1  |   File "/usr/local/lib/python3.6/site-packages/django/utils/functional.py", line 35, in __get__
web_1  |     res = instance.__dict__[self.name] = self.func(instance)
web_1  |   File "/usr/local/lib/python3.6/site-packages/django/urls/resolvers.py", line 398, in urlconf_module
web_1  |     return import_module(self.urlconf_name)
web_1  |   File "/usr/local/lib/python3.6/importlib/__init__.py", line 126, in import_module
web_1  |     return _bootstrap._gcd_import(name[level:], package, level)
web_1  |   File "<frozen importlib._bootstrap>", line 994, in _gcd_import
web_1  |   File "<frozen importlib._bootstrap>", line 971, in _find_and_load
web_1  |   File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
web_1  |   File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
web_1  |   File "<frozen importlib._bootstrap_external>", line 678, in exec_module
web_1  |   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
web_1  |   File "/code/app/urls.py", line 20, in <module>
web_1  |     url(r'^index/', include('classifier.urls')),
web_1  |   File "/usr/local/lib/python3.6/site-packages/django/conf/urls/__init__.py", line 50, in include
web_1  |     urlconf_module = import_module(urlconf_module)
web_1  |   File "/usr/local/lib/python3.6/importlib/__init__.py", line 126, in import_module
web_1  |     return _bootstrap._gcd_import(name[level:], package, level)
web_1  |   File "<frozen importlib._bootstrap>", line 994, in _gcd_import
web_1  |   File "<frozen importlib._bootstrap>", line 971, in _find_and_load
web_1  |   File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
web_1  |   File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
web_1  |   File "<frozen importlib._bootstrap_external>", line 678, in exec_module
web_1  |   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
web_1  |   File "/code/classifier/urls.py", line 2, in <module>
web_1  |     from . import views
web_1  |   File "/code/classifier/views.py", line 6, in <module>
web_1  |     import sample
web_1  | ModuleNotFoundError: No module named 'sample'