Is was trying to create Azure function using Python(Http trigger) to fetch data from the gremlin graph.
I used
from gremlin_python.driver import client as clientDriver
to import the libraries and it was working fine locally.
When i deploy the same code to the Azure portal and ran the code, am getting 500 internal error.
After trying some changes, i could see "from gremlin_python.driver import client as clientDriver" import statement is not working(When i remove this piece the code works)
When we run the code in VSCode, we are creating a virtual env and installing the gremlin packages, so it was working in local and not in Azure portal.
Could someone help me in resolving this issue.
For this problem, we need to make sure the requirements.txt is all right. And if you just do the import module by the line
from gremlin_python.driver import client as clientDriver
You need to add another line to import the gremlin_python.driver module explicitly.
import gremlin_python.driver
Hope it helps~
Related
Situation
I have an existing Python app in Google Colab that calls the Twitter API and sends the response to Cloud Storage.
I'm trying to automate the Twitter API call in GCP, and am wondering how I install the requests library for the API call, and install os for authentication.
I tried doing the following library installs in a Cloud Function:
import requests
import os
Result
That produced a resulting error message:
Deployment failure: Function failed on loading user code.
Do I need to install those libraries in a Cloud Function? I'm trying to understand this within the context of my Colab python app, but am not clear if the library installs are necessary.
Thank you for any input.
when you create your cloud function source code , there are two files.
main.py
requirements.txt
Add packages in requirements.txt as below
#Function dependencies, for example:
requests==2.20.0
creating a new python environment for your project might help and would be a good start for any project
it is easy to create.
## for unix-based systems
## create a python environment
python3 -m venv venv
## activate your environment
## in linux-based systems
. ./venv/bin/activate
if you are using google colab, add "!" before these commands, they should work fine.
I am using python-based Azure Function and would like to use the UUID package in the function.
However when the function is deployed, the function fails on the import uuid statement. uuid is specified in requirements and installs ok.
the uuid import works fine when I run the function locally in debug mode, but not when deployed.
I'm trying to use boto3 within a pipenv with Python 3.6.5.
So I installed it with
pipenv install boto3
So for testing purposes I'm using a single Flask app, and add at the beginning of the file:
import boto3
However without even running the program, PyLint warns me that E0401:Unable to import 'boto3', and the auto-completion only proposes botocore.
If I try to run the flask app or to deploy it to Lambda (cause it's the purpose of this app), I get an error 500.
However, the strange is that if I use the REPL within the pipenv and in the same directory and type
>> import boto3
Well it's successful, and I can use all the other commands of boto3. So in my opinion it is installed but for I reason I can't think of, my Python file can't load it.
I heard of file naming conflicts, but honestly I doubt that this is the reason since even if I rename the file and the Flask app with a weird name it still can't load.
Any thoughts about it? Thanks a lot
I'm using Apex to deploy lambda functions in AWS. I need to write a lambda function which runs a cleanup script on an Oracle RDS in my AWS VPC. Oracle has a very nice python library called cx_Oracle, but I'm having some problems using it in a Lambda function (running on Python 2.7). My first step was to try to run the oracle-described test code as follows:
from __future__ import print_function
import json
import boto3
import boto3.ec2
import os
import cx_Oracle
def handle(event, context):
con = cx_Oracle.connect('username/password#my.oracle.rds:1521/orcl')
print(str(con.version))
con.close()
When I try to run this piece of test code, I get the following response:
Unable to import module 'main': /var/task/cx_Oracle.so: invalid ELF header
Google has told me that this error is caused because the cx_Oracle library is not a complete oracle implementation for python, rather it requires the SQLPlus client to be pre-installed, and the cx_Oracle library references components installed as part of SQLPlus.
Obviously pre-installing SQLPlus might be difficult.
Apex has the
hooks {}
functionality which would allow me to pre-build things, but I'm having trouble finding documentation showing what happens to those artefacts and how that works. In theory I could download the libraries into a nexus or an S3 bucket, and then in my hooks{} declaration, I could add them to the zip file. I could then try to install them as part of the python script. However, I have a few problems with this:
How are the 'built' artefacts accessed inside the lambda
function? Can they be? Have I misunderstood this?
Does a python 2.7 lambda function have enough access rights to
the operating system of the host container to be able to install a
library?
If the answer to question 2 is no, is there another way to write
a lambda function to run some SQL against an Oracle RDS instance?
I'm trying to deploy a Flask web app with mysql connectivity. It's my first time using Azure, and coming off Linux it all seems pretty confusing.
My understanding is that one includes within the requirements.txt to include the packages required. When I build the default Flask app from Azure the file looks like this:
Flask<1
At this stage the site loads fine.
If I then include an additional line
https://cdn.mysql.com/Downloads/Connector-Python/mysql-connector-python-2.1.14.tar.gz
As per this answer https://stackoverflow.com/a/34489738/2697874
Then in my views.py file (which seems to be broadly synonymous to my old app.py file) I include...import mysql.connector
I then restart and reload my site...which then returns the error The page cannot be displayed because an internal server error has occurred.
Error logging spits out a load of html (seems pretty weird way to deliver error logs - so I must be missing something here). When I save to html and load it up I get this...
How can I include the mysql.connector library within my Flask web app?
Per my experience, the resoure https://cdn.mysql.com/Downloads/Connector-Python/mysql-connector-python-2.1.14.tar.gz is for Linux, not for Azure WebApps based on Windows, and the link seems to be not available now.
I used the command pip search mysql-connector to list the related package. Then, I tried to use mysql-connector instead of mysql-connector-python via pip install, and tried to import mysql.connector in local Python interpreter that works fine.
So please use mysql-connector==2.1.4 instead of mysql-connector-python== in the requirements.txt file of your project using IDE, then re-deploy the project on Azure and try again. The package will be installed automatically as the offical doc said as below.
Package Management
Packages listed in requirements.txt will be installed automatically in the virtual environment using pip. This happens on every deployment, but pip will skip installation if a package is already installed.
Any update, please feel free to let me know.