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sample_analyze_receipts_async.py
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sample_analyze_receipts_async.py
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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/formrecognizer/receiptfieldschema
USAGE:
python sample_analyze_receipts_async.py
Set the environment variables with your own values before running the sample:
1) AZURE_FORM_RECOGNIZER_ENDPOINT - the endpoint to your Form Recognizer resource.
2) AZURE_FORM_RECOGNIZER_KEY - your Form Recognizer API key
"""
import os
import asyncio
async def analyze_receipts_async():
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.formrecognizer.aio import DocumentAnalysisClient
endpoint = os.environ["AZURE_FORM_RECOGNIZER_ENDPOINT"]
key = os.environ["AZURE_FORM_RECOGNIZER_KEY"]
document_analysis_client = DocumentAnalysisClient(
endpoint=endpoint, credential=AzureKeyCredential(key)
)
async with document_analysis_client:
with open(path_to_sample_documents, "rb") as f:
poller = await document_analysis_client.begin_analyze_document(
"prebuilt-receipt", document=f, locale="en-US"
)
receipts = await poller.result()
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'}")
merchant_name = receipt.fields.get("MerchantName")
if merchant_name:
print(
f"Merchant Name: {merchant_name.value} has confidence: "
f"{merchant_name.confidence}"
)
transaction_date = receipt.fields.get("TransactionDate")
if transaction_date:
print(
f"Transaction Date: {transaction_date.value} has confidence: "
f"{transaction_date.confidence}"
)
if receipt.fields.get("Items"):
print("Receipt items:")
for idx, item in enumerate(receipt.fields.get("Items").value):
print(f"...Item #{idx + 1}")
item_description = item.value.get("Description")
if item_description:
print(
f"......Item Description: {item_description.value} has confidence: "
f"{item_description.confidence}"
)
item_quantity = item.value.get("Quantity")
if item_quantity:
print(
f"......Item Quantity: {item_quantity.value} has confidence: "
f"{item_quantity.confidence}"
)
item_price = item.value.get("Price")
if item_price:
print(
f"......Individual Item Price: {item_price.value} has confidence: "
f"{item_price.confidence}"
)
item_total_price = item.value.get("TotalPrice")
if item_total_price:
print(
f"......Total Item Price: {item_total_price.value} has confidence: "
f"{item_total_price.confidence}"
)
subtotal = receipt.fields.get("Subtotal")
if subtotal:
print(f"Subtotal: {subtotal.value} has confidence: {subtotal.confidence}")
tax = receipt.fields.get("TotalTax")
if tax:
print(f"Total tax: {tax.value} has confidence: {tax.confidence}")
tip = receipt.fields.get("Tip")
if tip:
print(f"Tip: {tip.value} has confidence: {tip.confidence}")
total = receipt.fields.get("Total")
if total:
print(f"Total: {total.value} has confidence: {total.confidence}")
print("--------------------------------------")
async def main():
await analyze_receipts_async()
if __name__ == "__main__":
import sys
from azure.core.exceptions import HttpResponseError
try:
asyncio.run(main())
except HttpResponseError as error:
print(
"For more information about troubleshooting errors, see the following guide: "
"https://aka.ms/azsdk/python/formrecognizer/troubleshooting"
)
# 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