python - Using moviepy, scipy and numpy in amazon lambda

Question

I'd like to generate video using AWS Lambda feature.

I've followed instructions found here and here.

And I now have the following process to build my Lambda function:

Step 1

Fire a Amazon Linux EC2 instance and run this as root on it:

#! /usr/bin/env bash

# Install the SciPy stack on Amazon Linux and prepare it for AWS Lambda

yum -y update
yum -y groupinstall "Development Tools"
yum -y install blas --enablerepo=epel
yum -y install lapack --enablerepo=epel
yum -y install atlas-sse3-devel --enablerepo=epel
yum -y install Cython --enablerepo=epel
yum -y install python27
yum -y install python27-numpy.x86_64
yum -y install python27-numpy-f2py.x86_64
yum -y install python27-scipy.x86_64

/usr/local/bin/pip install --upgrade pip
mkdir -p /home/ec2-user/stack
/usr/local/bin/pip install moviepy -t /home/ec2-user/stack

cp -R /usr/lib64/python2.7/dist-packages/numpy /home/ec2-user/stack/numpy
cp -R /usr/lib64/python2.7/dist-packages/scipy /home/ec2-user/stack/scipy

tar -czvf stack.tgz /home/ec2-user/stack/*

Step 2

I scp the resulting tarball to my laptop. And then run this script to build a zip archive.

#! /usr/bin/env bash

mkdir tmp
rm lambda.zip
tar -xzf stack.tgz -C tmp

zip -9 lambda.zip process_movie.py
zip -r9 lambda.zip *.ttf
cd tmp/home/ec2-user/stack/
zip -r9 ../../../../lambda.zip *

process_movie.py script is at the moment only a test to see if the stack is ok:

def make_movie(event, context):
    import os
    print(os.listdir('.'))
    print(os.listdir('numpy'))
    try:
        import scipy
    except ImportError:
        print('can not import scipy')

    try:
        import numpy
    except ImportError:
        print('can not import numpy')

    try:
        import moviepy
    except ImportError:
        print('can not import moviepy')

Step 3

Then I upload the resulting archive to S3 to be the source of my lambda function. When I test the function I get the following callstack:

START RequestId: 36c62b93-b94f-11e5-9da7-83f24fc4b7ca Version: $LATEST
['tqdm', 'imageio-1.4.egg-info', 'decorator.pyc', 'process_movie.py', 'decorator-4.0.6.dist-info', 'imageio', 'moviepy', 'tqdm-3.4.0.dist-info', 'scipy', 'numpy', 'OpenSans-Regular.ttf', 'decorator.py', 'moviepy-0.2.2.11.egg-info']
['add_newdocs.pyo', 'numarray', '__init__.py', '__config__.pyc', '_import_tools.py', 'setup.pyo', '_import_tools.pyc', 'doc', 'setupscons.py', '__init__.pyc', 'setup.py', 'version.py', 'add_newdocs.py', 'random', 'dual.pyo', 'version.pyo', 'ctypeslib.pyc', 'version.pyc', 'testing', 'dual.pyc', 'polynomial', '__config__.pyo', 'f2py', 'core', 'linalg', 'distutils', 'matlib.pyo', 'tests', 'matlib.pyc', 'setupscons.pyc', 'setup.pyc', 'ctypeslib.py', 'numpy', '__config__.py', 'matrixlib', 'dual.py', 'lib', 'ma', '_import_tools.pyo', 'ctypeslib.pyo', 'add_newdocs.pyc', 'fft', 'matlib.py', 'setupscons.pyo', '__init__.pyo', 'oldnumeric', 'compat']
can not import scipy
'module' object has no attribute 'core': AttributeError
Traceback (most recent call last):
  File "/var/task/process_movie.py", line 91, in make_movie
    import numpy
  File "/var/task/numpy/__init__.py", line 122, in <module>
    from numpy.__config__ import show as show_config
  File "/var/task/numpy/numpy/__init__.py", line 137, in <module>
    import add_newdocs
  File "/var/task/numpy/numpy/add_newdocs.py", line 9, in <module>
    from numpy.lib import add_newdoc
  File "/var/task/numpy/lib/__init__.py", line 13, in <module>
    from polynomial import *
  File "/var/task/numpy/lib/polynomial.py", line 11, in <module>
    import numpy.core.numeric as NX
AttributeError: 'module' object has no attribute 'core'

END RequestId: 36c62b93-b94f-11e5-9da7-83f24fc4b7ca
REPORT RequestId: 36c62b93-b94f-11e5-9da7-83f24fc4b7ca  Duration: 112.49 ms Billed Duration: 200 ms     Memory Size: 1536 MB    Max Memory Used: 14 MB

I cant understand why python does not found the core directory that is present in the folder structure.

EDIT:

Following @jarmod advice I've reduced the lambdafunction to:

def make_movie(event, context):
    print('running make movie')
    import numpy

I now have the following error:

START RequestId: 6abd7ef6-b9de-11e5-8aee-918ac0a06113 Version: $LATEST
running make movie
Error importing numpy: you should not try to import numpy from
        its source directory; please exit the numpy source tree, and relaunch
        your python intepreter from there.: ImportError
Traceback (most recent call last):
  File "/var/task/process_movie.py", line 3, in make_movie
    import numpy
  File "/var/task/numpy/__init__.py", line 127, in <module>
    raise ImportError(msg)
ImportError: Error importing numpy: you should not try to import numpy from
        its source directory; please exit the numpy source tree, and relaunch
        your python intepreter from there.

END RequestId: 6abd7ef6-b9de-11e5-8aee-918ac0a06113
REPORT RequestId: 6abd7ef6-b9de-11e5-8aee-918ac0a06113  Duration: 105.95 ms Billed Duration: 200 ms     Memory Size: 1536 MB    Max Memory Used: 14 MB

Answer 1

I was also following your first link and managed to import numpy and pandas in a Lambda function this way (on Windows):

1. Started a (free-tier) t2.micro EC2 instance with 64-bit Amazon Linux AMI 2015.09.1 and used Putty to SSH in.

2. Tried the same commands you used and the one recommended by the Amazon article:

   sudo yum -y update
   sudo yum -y upgrade
   sudo yum -y groupinstall "Development Tools"
   sudo yum -y install blas --enablerepo=epel
   sudo yum -y install lapack --enablerepo=epel
   sudo yum -y install Cython --enablerepo=epel
   sudo yum install python27-devel python27-pip gcc
   

3. Created the virtual environment:

   virtualenv ~/env
   source ~/env/bin/activate
   

4. Installed the packages:

   sudo ~/env/bin/pip2.7 install numpy
   sudo ~/env/bin/pip2.7 install pandas
   

5. Then, using WinSCP, I logged in and downloaded everything (except _markerlib, pip*, pkg_resources, setuptools* and easyinstall*) from /home/ec2-user/env/lib/python2.7/dist-packages, and everything from /home/ec2-user/env/lib64/python2.7/site-packages from the EC2 instance.

6. I put all these folders and files into one zip, along with the .py file containing the Lambda function. illustration of all files copied

7. Because this .zip is larger than 10 MB, I created an S3 bucket to store the file. I copied the link of the file from there and pasted at "Upload a .ZIP from Amazon S3" at the Lambda function.

8. The EC2 instance can be shut down, it's not needed any more.

With this, I could import numpy and pandas. I'm not familiar with moviepy, but scipy might already be tricky as Lambda has a limit for unzipped deployment package size at 262 144 000 bytes. I'm afraid numpy and scipy together are already over that.