App Engine: ImportError: No module named _gdal

Question

如何在 Google App Engine 标准中启用像 GDAL 这样的 python 2.7 库？目前在 App Engine 的 lib 文件夹中有 linux python-modules，但是当尝试运行通过端点的代码时，App Engine 给出内部服务器错误：ImportError: No module named _gdal .我正在使用 pygdal 版本 2.2.3.3。 libgdal（pygdal 需要）是否也应该安装在 App Engine 上，如果是，该怎么做？我在 these instructions using this syntax: sudo pip install --target lib --requirement requirements.txt --ignore-installed as it says here 之后将 GDAL 在本地安装到 lib 文件夹中（在 windows10 上使用 ubuntu bash）。请帮忙！

Answer 1

Google App Engine 的标准环境 Python27 仅支持一组特定的使用 C 扩展的第三方库，已列出 here。 pygdal 不在列表中。

您可能想查看 Python3 标准运行时，尽管它在 beta 中。它允许您安装任意第三方库。

Answer 2

来自What compiler can I use to build GDAL/OGR?

GDAL/OGR is written in ANSI C and C++. It can be compiled with all modern C/C++ compilers.

这意味着它与 (1st generation/python 2.7) 标准环境 Pure Python 沙箱要求不兼容：

All code for the Python runtime environment must be pure Python, and not include any C extensions or other code that must be compiled.

您可能想看看灵活的环境。可能使用自定义运行时，请参阅

Answer 3

修改 this 链接的答案我设法让 GDAL 在 App Engine Flexible 中工作。我的码头文件：

FROM gcr.io/google-appengine/python

RUN apt-get update && apt-get -y install libproj-dev libgdal-dev 
RUN export CPLUS_INCLUDE_PATH=/usr/include/gdal
RUN export C_INCLUDE_PATH=/usr/include/gdal
RUN gdal-config --version
# Create a virtualenv for dependencies. This isolates these packages from
# system-level packages.
RUN virtualenv /env -p python2.7

# Setting these environment variables are the same as running
# source /env/bin/activate.
ENV VIRTUAL_ENV /env
ENV PATH /env/bin:$PATH

# Copy the application's requirements.txt and run pip to install all
# dependencies into the virtualenv.
ADD requirements.txt requirements.txt
RUN pip install -r requirements.txt
# Add the application source code.
ADD . /app

CMD gunicorn -t 120 -b :$PORT main:app

我的app.yaml-文件：

runtime: custom
env: flex
entrypoint: gunicorn -t 120 -b :$PORT main:app
endpoints_api_service:
    name: xxxxx.com
rollout_strategy: managed
beta_settings:
    cloud_sql_instances: project:europe-north1:dbinstance
runtime_config:
    python_version: 2

requirements.text-文件:

pygdal==1.11.3.3

App Engine: ImportError: No module named _gdal

App Engine: ImportError: No module named _gdal

google-app-engine

module

gdal

python-2.7