www.digit-eyes.com Python API

digiteyes.py

"""
https://www.digit-eyes.com/ has an API, that uses 2 keys: one to access the API, and another to sign each request.

The documentation doesn't appear to have a Python 3.7 implementation of the signing algorithm, hence this gist.
---
Uses the requests HTTP library.
"""

import os
import base64
import hashlib
import requests
import hmac

DIGIT_EYES_KEY_M = os.environ.get('DIGIT_EYES_KEY_M', '??')
DIGIT_EYES_KEY_K = os.environ.get('DIGIT_EYES_KEY_K', '??')

def generate_digiteyes_url(upc, sig, auth_key_k=DIGIT_EYES_KEY_K):
    DIGIT_EYES_URL = 'https://www.digit-eyes.com/gtin/v2_0/?upcCode={upc}&' \
                     'language=en&app_key={key}&signature={signature}'
    return DIGIT_EYES_URL.format(
        upc=upc,
        key=auth_key_k,
        signature=sig,
    )

def generate_signature(upc, 
                       auth_key_m=DIGIT_EYES_KEY_M):
    sha_hash = hmac.new(str.encode(auth_key_m), str.encode(upc), hashlib.sha1)
    sig = base64.b64encode(sha_hash.digest()).decode()
    return sig

def DigitEyes_lookup(upc, 
                     auth_key_m=DIGIT_EYES_KEY_M, 
                     auth_key_k=DIGIT_EYES_KEY_K):
    try:
        sig = generate_signature(upc, auth_key_m)
        url = generate_digiteyes_url(upc, sig, auth_key_k)
        response = requests.request("GET", 
                                    url, 
                                    headers={'cache-control': "no-cache", })
        product_data = response.json()
        if response.status_code == 200:
            return product_data
    except Exception as err:
        print(err)
    return None

I built https://gist.github.com/ksdme/cce86ba6a517c1c78e2f79ce1e652f1a with support for optional caching.