ByteScout Cloud API Server - Document Parser API - Python - Parse From Uploaded File - ByteScout

ByteScout Cloud API Server – Document Parser API – Python – Parse From Uploaded File

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How to parse from uploaded file for document parser API in Python with ByteScout Cloud API Server

What is ByteScout Cloud API Server? It is API server that is ready to use and can be installed and deployed in less than 30 minutes on your own Windows server or server in a cloud. It can save data and files on your local server-based file storage or in Amazon AWS S3 storage. Data is processed solely on the API server and is powered by ByteScout engine, no cloud services or Internet connection is required for data processing..

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MultiPageTable-template1.yml

      
--- # Template that demonstrates parsing of multi-page table using only # regular expressions for the table start, end, and rows. # If regular expression cannot be written for every table row (for example, # if the table contains empty cells), try the second method demonstrated # in `MultiPageTable-template2.yml` template. templateVersion: 3 templatePriority: 0 sourceId: Multipage Table Test detectionRules: keywords: - Sample document with multi-page table fields: total: type: regex expression: TOTAL {{DECIMAL}} dataType: decimal tables: - name: table1 start: # regular expression to find the table start in document expression: Item\s+Description\s+Price\s+Qty\s+Extended Price end: # regular expression to find the table end in document expression: TOTAL\s+\d+\.\d\d row: # regular expression to find table rows expression: '^\s*(?<itemNo>\d+)\s+(?<description>.+?)\s+(?<price>\d+\.\d\d)\s+(?<qty>\d+)\s+(?<extPrice>\d+\.\d\d)' columns: - name: itemNo type: integer - name: description type: string - name: price type: decimal - name: qty type: integer - name: extPrice type: decimal multipage: true

ParseFromUploadedFile.py

      
import os import requests # pip install requests # Please NOTE: In this sample we're assuming Cloud Api Server is hosted at "https://localhost". # If it's not then please replace this with with your hosting url. # Base URL for PDF.co Web API requests BASE_URL = "https://localhost" # Source PDF file SourceFile = ".\\MultiPageTable.pdf" # Destination JSON file name DestinationFile = ".\\result.json" # Template text. Use Document Parser SDK (https://bytescout.com/products/developer/documentparsersdk/index.html) # to create templates. # Read template from file: file_read = open(".\\MultiPageTable-template1.yml", mode='r', encoding="utf-8",errors="ignore") Template = file_read.read() file_read.close() def main(args = None): uploadedFileUrl = uploadFile(SourceFile) if (uploadedFileUrl != None): PerformDocumentParser(uploadedFileUrl, Template, DestinationFile) def PerformDocumentParser(uploadedFileUrl, template, destinationFile): # Content data = { 'url': uploadedFileUrl, 'template': template } # Prepare URL for 'Document Parser' API request url = "{}/pdf/documentparser".format(BASE_URL) # Execute request and get response as JSON response = requests.post(url, data= data) if (response.status_code == 200): json = response.json() if json["error"] == False: # Get URL of result file resultFileUrl = json["url"] # Download result file r = requests.get(resultFileUrl, stream=True) if (r.status_code == 200): with open(destinationFile, 'wb') as file: for chunk in r: file.write(chunk) print(f"Result file saved as \"{destinationFile}\" file.") else: print(f"Request error: {response.status_code} {response.reason}") 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) 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={ "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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