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# coding: utf-8
# -------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for
# license information.
# --------------------------------------------------------------------------
"""
FILE: sample_analyze_receipts_async.py
DESCRIPTION:
This sample demonstrates how to analyze and extract common fields from receipts,
using a pre-trained receipt model.
See fields found on a receipt here:
https://aka.ms/azsdk/documentintelligence/receiptfieldschema
USAGE:
python sample_analyze_receipts_async.py
Set the environment variables with your own values before running the sample:
1) DOCUMENTINTELLIGENCE_ENDPOINT - the endpoint to your Document Intelligence resource.
2) DOCUMENTINTELLIGENCE_API_KEY - your Document Intelligence API key.
"""
import os
import asyncio
def format_price(price_dict):
if price_dict is None:
return "N/A"
return "".join([f"{p}" for p in price_dict.values()])
async def analyze_receipts():
path_to_sample_documents = os.path.abspath(
os.path.join(
os.path.abspath(__file__),
"..",
"..",
"./sample_forms/receipt/contoso-allinone.jpg",
)
)
from azure.core.credentials import AzureKeyCredential
from azure.ai.documentintelligence.aio import DocumentIntelligenceClient
from azure.ai.documentintelligence.models import AnalyzeResult
endpoint = os.environ["DOCUMENTINTELLIGENCE_ENDPOINT"]
key = os.environ["DOCUMENTINTELLIGENCE_API_KEY"]
document_intelligence_client = DocumentIntelligenceClient(endpoint=endpoint, credential=AzureKeyCredential(key))
async with document_intelligence_client:
with open(path_to_sample_documents, "rb") as f:
poller = await document_intelligence_client.begin_analyze_document(
"prebuilt-receipt", body=f, locale="en-US"
)
receipts: AnalyzeResult = await poller.result()
if receipts.documents:
for idx, receipt in enumerate(receipts.documents):
print(f"--------Analysis of receipt #{idx + 1}--------")
print(f"Receipt type: {receipt.doc_type if receipt.doc_type else 'N/A'}")
if receipt.fields:
merchant_name = receipt.fields.get("MerchantName")
if merchant_name:
print(
f"Merchant Name: {merchant_name.get('valueString')} has confidence: "
f"{merchant_name.confidence}"
)
transaction_date = receipt.fields.get("TransactionDate")
if transaction_date:
print(
f"Transaction Date: {transaction_date.get('valueDate')} has confidence: "
f"{transaction_date.confidence}"
)
items = receipt.fields.get("Items")
if items:
print("Receipt items:")
for idx, item in enumerate(items.get("valueArray")):
print(f"...Item #{idx + 1}")
item_description = item.get("valueObject").get("Description")
if item_description:
print(
f"......Item Description: {item_description.get('valueString')} has confidence: "
f"{item_description.confidence}"
)
item_quantity = item.get("valueObject").get("Quantity")
if item_quantity:
print(
f"......Item Quantity: {item_quantity.get('valueString')} has confidence: "
f"{item_quantity.confidence}"
)
item_total_price = item.get("valueObject").get("TotalPrice")
if item_total_price:
print(
f"......Total Item Price: {format_price(item_total_price.get('valueCurrency'))} has confidence: "
f"{item_total_price.confidence}"
)
subtotal = receipt.fields.get("Subtotal")
if subtotal:
print(
f"Subtotal: {format_price(subtotal.get('valueCurrency'))} has confidence: {subtotal.confidence}"
)
tax = receipt.fields.get("TotalTax")
if tax:
print(f"Total tax: {format_price(tax.get('valueCurrency'))} has confidence: {tax.confidence}")
tip = receipt.fields.get("Tip")
if tip:
print(f"Tip: {format_price(tip.get('valueCurrency'))} has confidence: {tip.confidence}")
total = receipt.fields.get("Total")
if total:
print(f"Total: {format_price(total.get('valueCurrency'))} has confidence: {total.confidence}")
print("--------------------------------------")
async def main():
await analyze_receipts()
if __name__ == "__main__":
from azure.core.exceptions import HttpResponseError
from dotenv import find_dotenv, load_dotenv
try:
load_dotenv(find_dotenv())
asyncio.run(main())
except HttpResponseError as error:
# Examples of how to check an HttpResponseError
# Check by error code:
if error.error is not None:
if error.error.code == "InvalidImage":
print(f"Received an invalid image error: {error.error}")
if error.error.code == "InvalidRequest":
print(f"Received an invalid request error: {error.error}")
# Raise the error again after printing it
raise
# If the inner error is None and then it is possible to check the message to get more information:
if "Invalid request".casefold() in error.message.casefold():
print(f"Uh-oh! Seems there was an invalid request: {error}")
# Raise the error again
raise
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