Python no module named warnings

No module named warnings when starting GAE inside virtualenv locally

I am trying to run my GAE app locally inside a virtual environment.

I’ve followed these two articles [1], [2] as reference to setup, but when I source evn/bin/activate and then dev_appserver.py . , it keeps raising the error of ImportError: No module named warnings (more trace below)

Surprisingly, if I start it without activating virtual env by just running dev_appserver.py . inside root of project it runs without any issue.

Is there any solution or workaround for this problem?

INFO 2017-08-31 14:09:36,293 devappserver2.py:116] Skipping SDK update check. INFO 2017-08-31 14:09:36,354 api_server.py:313] Starting API server at: http://localhost:52608 INFO 2017-08-31 14:09:36,357 dispatcher.py:226] Starting module "default" running at: http://localhost:8080 INFO 2017-08-31 14:09:36,359 admin_server.py:116] Starting admin server at: http://localhost:8000 Traceback (most recent call last): File "/usr/local/share/google/google-cloud-sdk/platform/google_appengine/_python_runtime.py", line 103, in _run_file(__file__, globals()) File "/usr/local/share/google/google-cloud-sdk/platform/google_appengine/_python_runtime.py", line 97, in _run_file execfile(_PATHS.script_file(script_name), globals_) File "/usr/local/share/google/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/python/runtime.py", line 192, in main() File "/usr/local/share/google/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/python/runtime.py", line 172, in main sandbox.enable_sandbox(config) File "/usr/local/share/google/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/python/sandbox.py", line 326, in enable_sandbox __import__('%s.threading' % dist27.__name__) File "/usr/local/share/google/google-cloud-sdk/platform/google_appengine/google/appengine/dist27/threading.py", line 11, in import warnings File "/usr/local/share/google/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/python/sandbox.py", line 1076, in load_module raise ImportError('No module named %s' % fullname) ImportError: No module named warnings ERROR 2017-08-31 14:09:39,070 instance.py:280] Cannot connect to the instance on localhost:52366 

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Что означает ошибка ModuleNotFoundError: No module named

Ситуация: мы решили заняться бигдатой и обработать большой массив данных на Python. Чтобы было проще, мы используем уже готовые решения и находим нужный нам код в интернете, например такой:

import numpy as np x = [2, 3, 4, 5, 6] nums = np.array([2, 3, 4, 5, 6]) type(nums) zeros = np.zeros((5, 4)) lin = np.linspace(1, 10, 20)

Копируем, вставляем в редактор кода и запускаем, чтобы разобраться, как что работает. Но вместо обработки данных Python выдаёт ошибку:

❌ModuleNotFoundError: No module named numpy

Странно, но этот код точно правильный: мы его взяли из блога разработчика и, по комментариям, у всех всё работает. Откуда тогда ошибка?

Что это значит: Python пытается подключить библиотеку, которую мы указали, но не может её найти у себя.

Когда встречается: когда библиотеки нет или мы неправильно написали её название.

Что делать с ошибкой ModuleNotFoundError: No module named

Самый простой способ исправить эту ошибку — установить библиотеку, которую мы хотим подключить в проект. Для установки Python-библиотек используют штатную команду pip или pip3, которая работает так: pip install . В нашем случае Python говорит, что он не может подключить библиотеку Numpy, поэтому пишем в командной строке такое:

Это нужно написать не в командной строке Python, а в командной строке операционной системы. Тогда компьютер скачает эту библиотеку, установит, привяжет к Python и будет ругаться на строчку в коде import numpy.

Ещё бывает такое, что библиотека называется иначе, чем указано в команде pip install. Например, для работы с телеграм-ботами нужна библиотека telebot, а для её установки надо написать pip install pytelegrambotapi . Если попробовать подключить библиотеку с этим же названием, то тоже получим ошибку:

А иногда такая ошибка — это просто невнимательность: пропущенная буква в названии библиотеки или опечатка. Исправляем и работаем дальше.

В «Яндекс Практикуме» можно стать разработчиком, тестировщиком, аналитиком и менеджером цифровых продуктов. Первая часть обучения всегда бесплатная, чтобы попробовать и найти то, что вам по душе. Дальше — программы трудоустройства.

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Python for .NET: ImportError: No module named warnings

@SilentGhost I don’t know if you figured this out, but you need to set your PYTHONPATH environment variable rather than your PYTHONHOME variable. I, too, had the problem, set the environment variable with the ol’ Environment.SetVariable(«PYTHONPATH», . ) and everything worked out well in the end.

Good luck with the Python.NET.

I’m working with the 2.4 version of Python.NET with Python 3.6 and I had similar issues. I didn’t have much luck setting environment variables at runtime but I found the following approach worked.

I found Python.NET was picking up all packages in the folders defined in the static PythonEngine.PythonPath variable. If you have other directories set in the PYTHONPATH system variable, it will also include these too.

To include module directories at runtime you can do something like

PythonEngine.PythonPath = PythonEngine.PythonPath + ";" + moduleDirectory; using (Py.GIL())

Make sure you set the PythonEngine.PythonPath variable before making any calls to the python engine.

Also needed to restart visual studio to see any system variable changes take effect when debugging.

As a side note, I also found that my \Python36\Lib\site-packages folder path needed to be added to PYTHONPATH to pick up anything installed through pip.

I think by default the Python Engine does not set the paths you need automatically.

http://www.voidspace.org.uk/ironpython/custom_executable.shtml has an example for embedding ironpython. Looks like you are missing something like

PythonEngine engine = new PythonEngine(); engine.AddToPath(Path.GetDirectoryName(Application.ExecutablePath)); engine.AddToPath(MyPathToStdLib); 

Unless I know where and if Ironpython is installed, I prefer to find all of the standard modules I need, compile them to a IPyStdLibDLL and then do th following from my code

import clr clr.addReference("IPyStdLib") import site 

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