使用 GAE Python 第二代在本地运行

Question

我多年来一直在使用 GAE/P 1st gen 并且正在跳到我的第一个 GAE/P 2nd gen 项目。

我正在尝试像dev_appserver.py在第一代应用程序中那样在本地运行它，但是文档在这方面非常混乱。

我可以单独运行 Flask ( python main.py) 但静态文件不起作用（因为 Flask 对 一无所知app.yaml）并且数据存储也不起作用。

GAE 文档说这dev_appserver.py应该适用于第二代（除了在 Windows 上，但我在 Mac 上）但是当我运行它时，我收到以下错误。

当我dev_appserver.py使用 Python 2 或 3运行时会发生这种情况。我还CLOUDSDK_PYTHON按照说明设置了我的 Python 2 二进制文件。

那么我到底如何才能以静态文件和数据存储工作的方式在本地运行我的 GAE/P 第二代项目？！？

---

$ python ~/google-cloud-sdk/bin/dev_appserver.py --application=myapp --support_datastore_emulator=False ./app.yaml 
INFO     2019-02-12 00:39:21,885 devappserver2.py:278] Skipping SDK update check.
INFO     2019-02-12 00:39:23,128 api_server.py:275] Starting API server at: http://localhost:51187
INFO     2019-02-12 00:39:23,139 instance_factory.py:71] Detected Python 3.6.5

INFO     2019-02-12 00:39:24,459 instance_factory.py:205] Using pip to install dependency libraries; pip stdout is redirected to /var/folders/yd/xr84fg0946l72fp_cc6j9l540000gr/T/tmpj3SEUZ
INFO     2019-02-12 00:39:24,459 instance_factory.py:211] Running /var/folders/yd/xr84fg0946l72fp_cc6j9l540000gr/T/tmpLtysT3/bin/pip install --upgrade pip
INFO     2019-02-12 00:39:24,469 stub_util.py:357] Applying all pending transactions and saving the datastore
INFO     2019-02-12 00:39:24,469 stub_util.py:360] Saving search indexes
Traceback (most recent call last):
  File "/.../google-cloud-sdk/platform/google_appengine/dev_appserver.py", line 96, in <module>
    _run_file(__file__, globals())
  File "/.../google-cloud-sdk/platform/google_appengine/dev_appserver.py", line 90, in _run_file
    execfile(_PATHS.script_file(script_name), globals_)
  File "/.../google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 600, in <module>
    main()
  File "/.../google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 588, in main
    dev_server.start(options)
  File "/.../google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/devappserver2.py", line 360, in start
    options.api_host, apiserver.port, wsgi_request_info_)
  File "/.../google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/dispatcher.py", line 248, in start
    ssl_port)
  File "/.../google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/dispatcher.py", line 384, in _create_module
    ssl_port=ssl_port)
  File "/.../google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/module.py", line 1309, in __init__
    super(AutoScalingModule, self).__init__(**kwargs)
  File "/.../google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/module.py", line 598, in __init__
    self._module_configuration)
  File "/.../google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/module.py", line 231, in _create_instance_factory
    module_configuration=module_configuration)
  File "/.../google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/python/instance_factory.py", line 98, in __init__
    self._SetupVirtualenvFromConfiguration()
  File "/.../google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/python/instance_factory.py", line 143, in _SetupVirtualenvFromConfiguration
    self._venv_dir, requirements_file.name)
  File "/.../google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/python/instance_factory.py", line 228, in _SetupVirtualenv
    cls._RunPipInstall(venv_dir, requirements_file_name)
  File "/.../google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/python/instance_factory.py", line 212, in _RunPipInstall
    pip_proc = subprocess.Popen(pip_cmd, stdout=pip_out)
  File "/usr/local/Cellar/python@2/2.7.15/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 394, in __init__
    errread, errwrite)
  File "/usr/local/Cellar/python@2/2.7.15/Frameworks/Python.framework/Versions/2.7/lib/python2.7/subprocess.py", line 1047, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

Answer 1

一夜好眠后，我能够找出问题所在......

我dev_appserver.py在我的虚拟环境中运行。出于某种原因，这阻止dev_appserver.py了能够找到pip（需要在我的requirements.txt.

在运行之前退出我的虚拟环境dev_appserver.py解决了这个问题。