main.py

from flask import escape
from flask import jsonify

def hello_http(request):
    request_json = request.get_json(silent=True)
    request_args = request.args
    if request_json and 'image' in request_json:
        res = detect_handwritten_ocr_uri(request_json['image'])
    else:
        res = "Error in payload data. Attach image"    
    return jsonify({"result":res})



# [START vision_handwritten_ocr_gcs_beta]
def detect_handwritten_ocr_uri(uri):
    from google.cloud import vision_v1p3beta1 as vision
    client = vision.ImageAnnotatorClient()
    image = vision.Image()
    image.source.image_uri = uri

    image_context = vision.ImageContext(
        language_hints=['en-t-i0-handwrit'])

    response = client.document_text_detection(image=image,
                                              image_context=image_context)

    print('Full Text: {}'.format(response.full_text_annotation.text))
    return response.full_text_annotation.text
 

    if response.error.message:
        raise Exception(
            '{}\nFor more info on error messages, check: '
            'https://cloud.google.com/apis/design/errors'.format(
                response.error.message))
# [END vision_handwritten_ocr_gcs_beta]