How to read barcode from uploaded file for barcode reader API in Python using PDF.co Web API

Step By Step Instructions on how to read barcode from uploaded file for barcode reader API in Python

Writing of the code to read barcode from uploaded file in Python can be done by developers of any level using PDF.co Web API. Barcode reader API in Python can be applied with PDF.co Web API. PDF.co Web API is the Rest API that provides set of data extraction functions, tools for documents manipulation, splitting and merging of pdf files. Includes built-in OCR, images recognition, can generate and read barcodes from images, scans and pdf.

If you want to speed up the application’s code writing then Python code samples for Python developers help to implement using PDF.co Web API. For implementation of this functionality, please copy and paste the code below into your app using code editor. Then compile and run your app. You can use these Python sample examples in one or many applications.

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ReadBarcodeFromUploadedFile.py

      
import os import requests # pip install requests # The authentication key (API Key). # Get your own by registering at https://app.pdf.co/documentation/api API_KEY = "*************************************" # Base URL for PDF.co Web API requests BASE_URL = "https://api.pdf.co/v1" # Source file name SourceFile = ".\\sample.pdf" # Comma-separated list of barcode types to search. # See valid barcode types in the documentation https://app.pdf.co/documentation/api/1.0/barcode/read_from_url.html BarcodeTypes = "Code128,Code39,Interleaved2of5,EAN13" # Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'. Pages = "" def main(args = None): uploadedFileUrl = uploadFile(SourceFile) if (uploadedFileUrl != None): readBarcodes(uploadedFileUrl) def readBarcodes(uploadedFileUrl): """Get Barcode Information using PDF.co Web API""" # Prepare URL for 'Barcode Reader' API request url = "{}/barcode/read/from/url?types={}&pages={}&url={}".format( BASE_URL, BarcodeTypes, Pages, uploadedFileUrl ) # Execute request and get response as JSON response = requests.get(url, headers={ "x-api-key": API_KEY, "content-type": "application/octet-stream" }) if (response.status_code == 200): json = response.json() if json["error"] == False: # Display information for barcode in json["barcodes"]: print("Found barcode:") print(f" Type: {barcode['TypeName']}") print(f" Value: {barcode['Value']}") print(f" Document Page Index: {barcode['Page']}") print(f" Rectangle: {barcode['Rect']}") print(f" Confidence: {barcode['Confidence']}") print("") else: # Show service reported error print(json["message"]) else: print(f"Request error: {response.status_code} {response.reason}") def uploadFile(fileName): """Uploads file to the cloud""" # 1. RETRIEVE PRESIGNED URL TO UPLOAD FILE. # Prepare URL for 'Get Presigned URL' API request url = "{}/file/upload/get-presigned-url?contenttype=application/octet-stream&name={}".format( BASE_URL, os.path.basename(fileName)) # Execute request and get response as JSON response = requests.get(url, headers={ "x-api-key": API_KEY }) if (response.status_code == 200): json = response.json() if json["error"] == False: # URL to use for file upload uploadUrl = json["presignedUrl"] # URL for future reference uploadedFileUrl = json["url"] # 2. UPLOAD FILE TO CLOUD. with open(fileName, 'rb') as file: requests.put(uploadUrl, data=file, headers={ "x-api-key": API_KEY, "content-type": "application/octet-stream" }) return uploadedFileUrl else: # Show service reported error print(json["message"]) else: print(f"Request error: {response.status_code} {response.reason}") return None if __name__ == '__main__': main()

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