在Google App Engine上部署应用-Requirements.txt错误

时间：2020-02-02 11:12:16

标签： python google-app-engine google-cloud-platform

我无法在Google App Engine上部署应用。

问题似乎来自我的requirements.txt文件：

  • 当我部署示例building-an-app-1时，它运行良好。
  • 当我用我的原始requirements.txt文件替换时，它不起作用*。

这是我的requirements.txt：

Flask==1.1.1
flask-wtf==0.14.2
unidecode
numpy
openfoodfacts
os

当我删除最后两个软件包时，它会起作用。

出什么问题了？

* gcloud deploy app返回：

File upload done.
Updating service [default]...failed.                                           
ERROR: (gcloud.app.deploy) Error Response: [9] Cloud build 813ab290-60a1-427c-830f-3a7e2d35f39b status: FAILURE.
Build error details: {"error":{"errorType":"BuildError","canonicalCode":"INVALID_ARGUMENT","errorId":"288DA415","errorMessage":"01 Feb 2020 17:23:53 INFO     Arguments: ['--parser_script=/usr/local/bin/ftl.par', '--src=', '--entrypoint=', '--name=eu.gcr.io/skilful-alpha-259713/app-engine-tmp/app/ttl-2h:34df8d6c-74e5-4583-bd94-165295531608', '--directory=/workspace', '--destination=/srv', '--cache-repository=eu.gcr.io/skilful-alpha-259713/app-engine-tmp/build-cache/ttl-7d', '--cache', '--builder-output-path=\"\"', '--additional-directory=/.googleconfig', '--python-cmd=/opt/python3.7/bin/python3.7', '--pip-cmd=/env/bin/python3.7 -m pip', '--venv-cmd=/opt/python3.7/bin/python3.7 -m venv /env', '-v=DEBUG', '--base=eu.gcr.io/gae-runtimes/python37:python37_20191019_3_7_4_RC00']
01 Feb 2020 17:23:53 INFO     Unparsed arguments: ['--name=eu.gcr.io/skilful-alpha-259713/app-engine-tmp/app/ttl-2h:34df8d6c-74e5-4583-bd94-165295531608', '--directory=/workspace', '--destination=/srv', '--cache-repository=eu.gcr.io/skilful-alpha-259713/app-engine-tmp/build-cache/ttl-7d', '--cache', '--builder-output-path=\"\"', '--additional-directory=/.googleconfig', '--python-cmd=/opt/python3.7/bin/python3.7', '--pip-cmd=/env/bin/python3.7 -m pip', '--venv-cmd=/opt/python3.7/bin/python3.7 -m venv /env', '-v=DEBUG', '--base=eu.gcr.io/gae-runtimes/python37:python37_20191019_3_7_4_RC00']
01 Feb 2020 17:23:53 INFO     Executing ['/usr/local/bin/ftl.par', '--name=eu.gcr.io/skilful-alpha-259713/app-engine-tmp/app/ttl-2h:34df8d6c-74e5-4583-bd94-165295531608', '--directory=/workspace', '--destination=/srv', '--cache-repository=eu.gcr.io/skilful-alpha-259713/app-engine-tmp/build-cache/ttl-7d', '--cache', '--builder-output-path=\"\"', '--additional-directory=/.googleconfig', '--python-cmd=/opt/python3.7/bin/python3.7', '--pip-cmd=/env/bin/python3.7 -m pip', '--venv-cmd=/opt/python3.7/bin/python3.7 -m venv /env', '-v=DEBUG', '--base=eu.gcr.io/gae-runtimes/python37:python37_20191019_3_7_4_RC00']
INFO     FTL version python-v0.17.0
INFO     Beginning FTL build for python
INFO     FTL arg passed: virtualenv_dir /env
INFO     FTL arg passed: ttl 168
INFO     FTL arg passed: python_cmd /opt/python3.7/bin/python3.7
INFO     FTL arg passed: cache True
INFO     FTL arg passed: virtualenv_cmd virtualenv
INFO     FTL arg passed: entrypoint None
INFO     FTL arg passed: exposed_ports None
INFO     FTL arg passed: pip_cmd /env/bin/python3.7 -m pip
INFO     FTL arg passed: tar_base_image_path None
INFO     FTL arg passed: export_cache_stats False
INFO     FTL arg passed: builder_output_path \"\"
INFO     FTL arg passed: destination_path /srv
INFO     FTL arg passed: sh_c_prefix False
INFO     FTL arg passed: base eu.gcr.io/gae-runtimes/python37:python37_20191019_3_7_4_RC00
INFO     FTL arg passed: cache_key_version v0.17.0
INFO     FTL arg passed: cache_salt 
INFO     FTL arg passed: cache_repository eu.gcr.io/skilful-alpha-259713/app-engine-tmp/build-cache/ttl-7d
INFO     FTL arg passed: venv_cmd /opt/python3.7/bin/python3.7 -m venv /env
INFO     FTL arg passed: name eu.gcr.io/skilful-alpha-259713/app-engine-tmp/app/ttl-2h:34df8d6c-74e5-4583-bd94-165295531608
INFO     FTL arg passed: global_cache False
INFO     FTL arg passed: upload True
INFO     FTL arg passed: fail_on_error True
INFO     FTL arg passed: output_path None
INFO     FTL arg passed: directory /workspace
INFO     FTL arg passed: additional_directory /.googleconfig
INFO     FTL arg passed: verbosity DEBUG
INFO     starting: full build
INFO     starting: builder initialization
INFO     Loading Docker credentials for repository 'eu.gcr.io/gae-runtimes/python37:python37_20191019_3_7_4_RC00'
INFO     Loading Docker credentials for repository 'eu.gcr.io/skilful-alpha-259713/app-engine-tmp/app/ttl-2h:34df8d6c-74e5-4583-bd94-165295531608'
INFO     builder initialization took 0 seconds
INFO     starting: build process for FTL image
INFO     starting: checking_cached_interpreter_layer
INFO     starting: check python version
INFO     `python version` full cmd:
/opt/python3.7/bin/python3.7 --version
I.

4 个答案:

答案 0 :(得分：2)

根据您收到的错误，Cloud Build无法安装您在requirements.txt文件中指定的最后两个依赖项。如果您转到Cloud Build History page并检查失败的部署，则会注意到部署失败，并显示与此类似的错误消息：

inline Scalar& operator()(double r, double c) {
    //  double r_offset = -0.5, c_offset = -0.5;
    return Base::operator()(int(r - r_offset), int(c - c_offset));
}

由于它是Python 3.7标准库的一部分，因此不需要在{.3。}中包含os module。例如，请注意，您基于应用程序的main.py会导入datetime module，而在requirements.txt file上未指定。

Open Food Facts package实际上尚未在PyPI上发布（即https://pypi.org/project/openfoodfacts/为404），因此您需要参考App Engine's documentation的相关部分并手动添加，与此类似：

  1. 在应用程序的项目目录上创建一个Step #1 - "builder": INFO `pip_download_wheels` had stderr output: Step #1 - "builder": Could not find a version that satisfies the requirement openfoodfacts==0.1.0 (from -r requirements.txt (line 10)) (from versions: ) Step #1 - "builder": No matching distribution found for openfoodfacts==0.1.0 (from -r requirements.txt (line 10)) 目录（例如，我使用lib）。
  2. 通过发出以下命令：mkdir lib，将所需的依赖项复制到新创建的lib目录中。
  3. 转到pip3 install git+git://github.com/openfoodfacts/openfoodfacts-python.git -t lib目录并验证是否已正确安装所有依赖项。
  4. 修改您的lib文件以使用Open Food Facts软件包所需的依赖项。它应该看起来像这样：
requirements.txt
  1. 以类似于Flask==1.1.1 flask-wtf==0.14.2 unidecode==1.1.1 numpy==1.18.1 certifi==2019.11.28 chardet==3.0.4 idna==2.8 requests==2.22.0 urllib3==1.25.8 的方式将模块导入您的应用程序。
  2. 使用import lib.openfoodfacts as openff命令来部署您的应用程序。

最后，您应该有一个项目目录，其文件结构与此目录相似：

gcloud app deploy

使用以下命令可以在building-an-app-1/ app.yaml lib/ ... openfoodfacts/ autosuggest.py facets.py __init__.py openbeautyfacts.py openpetfoodfacts.py products.py __pycache__/ utils.py ... main.py requirements.txt static/ script.js style.css templates/ index.html 文件上导入os和openfoodfacts模块：

main.py

答案 1 :(得分：0)

您是否尝试像这样在本地使用此requirements.txt文件？：

pip install -r requirements.txt

您的requirements.txt文件的最后两行似乎与可以通过pip安装的Python软件包不符。

答案 2 :(得分：0)

实际上，os文件中同时存在openfoodfacts和requirements.txt（该文件仅需要可通过pip安装的软件包，请参见Declaring and managing dependencies）会导致pip安装错误：

[venv] openfoodfacts> pip install os
Collecting os
  Could not find a version that satisfies the requirement os (from versions: )
No matching distribution found for os

[venv] openfoodfacts> pip install openfoodfacts
Collecting openfoodfacts
  Could not find a version that satisfies the requirement openfoodfacts (from versions: )
No matching distribution found for openfoodfacts

您不需要在需求中添加os，它是标准python安装的一部分，您只需导入即可。

并且openfoodfacts似乎不是常规的Pypi软件包。如果它来自不需要SSH密钥的pip存储库，则可以在requirements.txt文件中指定它，请参见How to add a package-specific index-url to requirements.txt?。否则，您需要将其安装在您的应用中，以便可以将其与您的应用代码一起上传，请检查Private dependencies部分。

您可以/应该始终尝试install your dependencies locally作为requirements.txt文件的健全性检查。请注意需要SSH密钥的pip回购协议，因为默认情况下，您可以通过帐户配置访问这些密钥。

答案 3 :(得分：0)

现在，我无法部署要求为pyzbar==0.1.8（已在PyPi上发布）的应用。

我遇到以下错误：

Traceback (most recent call last): File "/env/lib/python3.7/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker worker.init_process() File "/env/lib/python3.7/site-packages/gunicorn/workers/gthread.py", line 92, in init_process super().init_process() 
File "/env/lib/python3.7/site-packages/gunicorn/workers/base.py", line 119, in init_process self.load_wsgi() 
File "/env/lib/python3.7/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi self.wsgi = self.app.wsgi() 
File "/env/lib/python3.7/site-packages/gunicorn/app/base.py", line 67, in wsgi self.callable = self.load() File "/env/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 49, in load return self.load_wsgiapp() 
File "/env/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp return util.import_app(self.app_uri) File "/env/lib/python3.7/site-packages/gunicorn/util.py", line 358, in import_app mod = importlib.import_module(module) 
File "/opt/python3.7/lib/python3.7/importlib/__init__.py", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level) 
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import 
File "<frozen importlib._bootstrap>", line 983, in _find_and_load 
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 677, in _load_unlocked 
File "<frozen importlib._bootstrap_external>", line 728, in exec_module 
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed 
File "/srv/main.py", line 21, in <module> from forms import BarcodeForm 
File "/srv/forms.py", line 1, in <module> from flask_wtf import FlaskForm 
File "/env/lib/python3.7/site-packages/flask_wtf/__init__.py", line 17, in <module> from .recaptcha import * 
File "/env/lib/python3.7/site-packages/flask_wtf/recaptcha/__init__.py", line 2, in <module> from .fields import * 
File "/env/lib/python3.7/site-packages/flask_wtf/recaptcha/fields.py", line 3, in <module> from . import widgets File "/env/lib/python3.7/site-packages/flask_wtf/recaptcha/widgets.py", line 5, in <module> from werkzeug import url_encode ImportError: cannot import name 'url_encode' from 'werkzeug' (/env/lib/python3.7/site-packages/werkzeug/__init__.py)

你知道发生了什么吗？

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