"errorMessage": "Unable to import module 'lambda_function': cannot import name 'exceptions' from 'cryptography.hazmat.bindings._rust' (unknown location)",

[jigarpatell]

i am using one aws lambda function where i need to import ( from cryptography.fernet import Fernet ) cryptography . i have one layer for that lambda function in which cryptography is installed and zipped.

but on running my lambda function it shows error like "errorMessage": "Unable to import module 'lambda_function': cannot import name 'exceptions' from 'cryptography.hazmat.bindings._rust' (unknown location)",

in directory : layer\python\lib\python3.12\site-packages
i used command : pip install cryptography -t .

[alex]

Are you running the pip install command on a system with the same ABI as lambda?

[jigarpatell]

I am creating a lambda layer of Cryptography library on my local machine and then uploading that .zip file on the layer for that lambda_function.

my lambda function works perfectly in my local machine, but not in AWS lambda .

in our lambda function we are importing below libraries
"
import csv
import mysql.connector
from cryptography.fernet import Fernet
import os
"

[alex]

You need to build lambdas in environments that match the lambda target. You can't just build on your local PC and upload it.

…

On Sat, Apr 20, 2024 at 9:40 PM Jigar Patel ***@***.***> wrote: I am creating a lambda layer of Cryptography library on my local machine and then uploading that .zip file on the layer for that lambda_function. my lambda function works perfectly in my local machine, but not in AWS lambda . in our lambda function we are importing below libraries " import csv import mysql.connector from cryptography.fernet import Fernet import os " — Reply to this email directly, view it on GitHub <#10863 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAAAGBBO5GK4NF3NXSODZLTY6MKHBAVCNFSM6AAAAABGQ4FN2SVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDANRXHAZTONZZHA> . You are receiving this because you commented.Message ID: ***@***.***>

-- All that is necessary for evil to succeed is for good people to do nothing.

[jigarpatell]

can I create this layer on freshly created EC2 instance or is there any other option available?

[alex]

An EC2 instance running the same version of Amazon Linux as lambda would work, yes.

…

On Sat, Apr 20, 2024 at 9:48 PM Jigar Patel ***@***.***> wrote: can I create this layer on freshly created EC2 instance or is there any other option available? — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: ***@***.***>

-- All that is necessary for evil to succeed is for good people to do nothing.

[jigarpatell]

thank you for your answer. my error got solved now but a new error came out . when my lambda function got triggered. i got below error log from cloudwatch.

File "/opt/python/lib/python3.12/site-packages/cryptography/exceptions.py", line 9, in
from cryptography.hazmat.bindings._rust import exceptions as rust_exceptions
pyo3_runtime.PanicException: Python API call failed
INIT_REPORT Init Duration: 1522.69 ms Phase: invoke Status: error Error Type: Runtime.ExitError

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