Importing Python modules for Azure Function
Question:
How can I import modules for a Python Azure Function?
import requests
Leads to:
2016-08-16T01:02:02.317 Exception while executing function: Functions.detect_measure. Microsoft.Azure.WebJobs.Script: Traceback (most recent call last):
File "D:homesitewwwrootdetect_measurerun.py", line 1, in <module>
import requests
ImportError: No module named requests
Related, where are the modules available documented?
Related question with fully documented answer
Python libraries on Web Job
Answers:
Python support is currently experimental for Azure Functions, so documentation isn’t very good.
You need to bring your own modules. None are available by default on Azure Functions. You can do this by uploading it via the portal UX or kudu (which is handy for lots of files).
You can leave comments on which packages you’d like, how you’d like to manage you packages here on the tracking issue for “real” Python support – https://github.com/Azure/azure-webjobs-sdk-script/issues/335
You need to include a requirements.txt file with your code which lists all the python dependencies of your function
From the docs:
https://docs.microsoft.com/en-us/azure/azure-functions/functions-reference-python#python-version-and-package-management
For example, your reqirements.txt file would contain:
requests==2.19.1
Install python packages from the python code itself with the following snippet:
def install(package):
# This function will install a package if it is not present
from importlib import import_module
try:
import_module(package)
except:
from sys import executable as se
from subprocess import check_call
check_call([se,'-m','pip','-q','install',package])
for package in ['requests','hashlib']:
install(package)
Desired libraries mentioned the list gets installed when the azure function is triggered for the first time. for the subsequent triggers, you can comment/ remove the installation code.
How can I import modules for a Python Azure Function?
import requests
Leads to:
2016-08-16T01:02:02.317 Exception while executing function: Functions.detect_measure. Microsoft.Azure.WebJobs.Script: Traceback (most recent call last):
File "D:homesitewwwrootdetect_measurerun.py", line 1, in <module>
import requests
ImportError: No module named requests
Related, where are the modules available documented?
Related question with fully documented answer
Python libraries on Web Job
Python support is currently experimental for Azure Functions, so documentation isn’t very good.
You need to bring your own modules. None are available by default on Azure Functions. You can do this by uploading it via the portal UX or kudu (which is handy for lots of files).
You can leave comments on which packages you’d like, how you’d like to manage you packages here on the tracking issue for “real” Python support – https://github.com/Azure/azure-webjobs-sdk-script/issues/335
You need to include a requirements.txt file with your code which lists all the python dependencies of your function
From the docs:
https://docs.microsoft.com/en-us/azure/azure-functions/functions-reference-python#python-version-and-package-management
For example, your reqirements.txt file would contain:
requests==2.19.1
Install python packages from the python code itself with the following snippet:
def install(package):
# This function will install a package if it is not present
from importlib import import_module
try:
import_module(package)
except:
from sys import executable as se
from subprocess import check_call
check_call([se,'-m','pip','-q','install',package])
for package in ['requests','hashlib']:
install(package)
Desired libraries mentioned the list gets installed when the azure function is triggered for the first time. for the subsequent triggers, you can comment/ remove the installation code.