AWS Lambda不导入LXML [英] AWS Lambda not importing LXML

问题描述

我试图在AWS Lambda中使用LXML模块，但没有运气.我使用以下命令下载了LXML:

I am trying to use the LXML module within AWS Lambda and having no luck. I downloaded LXML using the following command:

pip install lxml -t folder

要将其下载到我的lambda函数部署包中.与其他所有lambda函数一样，我压缩了lambda函数的内容，并将其上传到AWS Lambda.

To download it to my lambda function deployment package. I zipped the contents of my lambda function up as I have done with all other lambda functions, and uploaded it to AWS Lambda.

但是不管我怎么努力，我得到这个错误，当我运行函数:

However no matter what I try I get this error when I run the function:

Unable to import module 'handler': /var/task/lxml/etree.so: undefined symbol: PyFPE_jbuf

当我在本地运行它时，没有任何问题，只是当我在Lambda上运行时才出现此问题.

When I run it locally, I don't have an issues, it is simply when I run in on Lambda where this issue arises.

推荐答案

我遇到了同样的问题.

I faced the same issue.

RaphaëlBraud 发布的链接很有帮助，而这个链接也是如此: https://nervous.io/python/aws/拉姆达/2016/02/17/SciPy的-大熊猫 - 拉姆达/

The link posted by Raphaël Braud was helpful and so was this one: https://nervous.io/python/aws/lambda/2016/02/17/scipy-pandas-lambda/

使用两个链接，我能够成功导入lxml和其他必需的软件包.这是我遵循的步骤:

Using the two links I was able to successfully import lxml and other required packages. Here are the steps I followed:

• 使用Amazon Linux ami启动ec2机器

• 运行以下脚本来累积依赖关系:

• Launch an ec2 machine with Amazon Linux ami

• Run the following script to accumulate dependencies:

set -e -o pipefail
sudo yum -y upgrade
sudo yum -y install gcc python-devel libxml2-devel libxslt-devel

virtualenv ~/env && cd ~/env && source bin/activate
pip install lxml
for dir in lib64/python2.7/site-packages \
     lib/python2.7/site-packages
do
if [ -d $dir ] ; then
   pushd $dir; zip -r ~/deps.zip .; popd
fi
done  
mkdir -p local/lib
cp /usr/lib64/ #list of required .so files
local/lib/
zip -r ~/deps.zip local/lib

创建链接.样本文件内容:

Create handler and worker files as specified in the link. Sample file contents:

handler.py

handler.py

import os
import subprocess


libdir = os.path.join(os.getcwd(), 'local', 'lib')

def handler(event, context):
    command = 'LD_LIBRARY_PATH={} python worker.py '.format(libdir)
    output = subprocess.check_output(command, shell=True)

    print output

    return

worker.py:

worker.py:

import lxml

def sample_function( input_string = None):
    return "lxml import successful!"

if __name__ == "__main__":
    result = sample_function()
    print result

• 将处理程序和辅助程序添加到zip文件中.

下面是如何zip文件看起来上述步骤之后的结构:

Here is how the structure of the zip file looks after the above steps:

deps 
├── handler.py
├── worker.py 
├── local
│   └── lib
│       ├── libanl.so
│       ├── libBrokenLocale.so
|       ....
├── lxml
│   ├── builder.py
│   ├── builder.pyc
|       ....
├── <other python packages>

• 确保在创建lambda函数时指定了正确的处理程序名称.在上面的示例中，它将是-"handler.handler"

希望这会有所帮助！

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