Cannot import ready-to-use-Lambda layer

[Shyam-Prag]

I'm unable to use the ready-to-use Lambda Layer.

Steps I followed:

Step 1:
Download repo

Step 2:
cd ready-to-use

Step 3:
Zip the "amazonlinux-2" folder and attach it to my Python3.8 Lambda function

Step 4:
Inside my function, I'm running the below code which simply gets a file from S3 and attempts to use pytesseract.image_to_string:

import json
import os
import boto3
import botocore
import pytesseract
from PIL import Image

def lambda_handler(event, context):

    s3 = boto3.resource('s3')
    #downloads file from S3 to /tmp directory
    BUCKET_NAME = 'xxxxxxx' # replace with your bucket name
    KEY = 'test.jpg'
    try:
        s3.Bucket(BUCKET_NAME).download_file(KEY, '/tmp/my_local_image.jpg')
    except botocore.exceptions.ClientError as e:
        if e.response['Error']['Code'] == "404":
            print("The object does not exist.")
        else:
            raise
    
    image = '/tmp/my_local_image.jpg'

    text = pytesseract.image_to_string(Image.open(image))
    print(text)
    
    return "Hellow world"

Result:
I run into error -> Unable to import module 'lambda_function': No module named 'pytesseract'.

Kindly suggest how to make use of this layer, or could you provide the .zip file to upload as a layer directly.

[bweigel]

Hey @Shyam-Prag.

The layer just contains the (language-agnostic) tesseract binaries.

Your error:

Unable to import module 'lambda_function': No module named 'pytesseract'.

suggests, that you need to install the python module pytesseract as a dependency for your function. Check out the AWS Lambda Documentation on how to do that.

If you prefer to use infrastructure as code, check out the [example][./example] folder. There are examples (that contain this dependency) ready to deploy using the aws-cdk and the serverless-framework. Cheers.

---

Check out the releases each release contains a zip file that is ready to go as a layer, containing the language agnostic tesseract bninaries. Be advised that, however pytesseract is also not included there.