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Python SDK

The official d3-python-client package provides a high‑level, type‑safe interface to the D3 Business API.

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Installation

pip install d3-python-client

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Quick start

from d3_client import D3Client, D3ClientConfig

# Initialize the client
client = D3Client(
    api_key="your-api-key-here",
    base_url="https://api.dragdropdo.com",  # Optional, defaults to https://api.dragdropdo.com
    timeout=30000  # Optional, defaults to 30000ms
)

# Upload a file
upload_result = client.upload_file(
    file="/path/to/document.pdf",
    file_name="document.pdf",
    mime_type="application/pdf"
)

print("File key:", upload_result.file_key)

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Initialization

D3Client(config: D3ClientConfig)
Config:
  • api_key (required) – your D3 API key.
  • base_url (optional) – API base URL, default: https://api.dragdropdo.com.
  • timeout (optional) – request timeout in ms, default: 30000.
  • headers (optional) – additional headers to send with every request.

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File upload

upload_file(options: UploadFileOptions) -> UploadResponse
Options:
  • file (required) – file path string.
  • file_name (required) – original file name.
  • mime_type (optional) – MIME type (auto‑detected if omitted).
  • parts (optional) – number of upload parts (auto‑calculated).
  • on_progress (optional) – progress callback.
Example: 
result = client.upload_file(
    file="/path/to/file.pdf",
    file_name="document.pdf",
    mime_type="application/pdf",
    on_progress=lambda progress: print(f"Upload: {progress.percentage}%")
)

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Supported operations

check_supported_operation(
    options: SupportedOperationOptions
) -> SupportedOperationResponse
Options:
  • ext (required) – file extension (e.g. pdf, jpg).
  • action (optional) – specific action (convert, compress, …).
  • parameters (optional) – parameters to validate (e.g. {"convert_to": "png"}).
Examples: 
# Get available actions for PDF
actions = client.check_supported_operation(ext="pdf")
print(actions.available_actions)

# Check if convert to PNG is supported
supported = client.check_supported_operation(
    ext="pdf",
    action="convert",
    parameters={"convert_to": "png"}
)
print("Supported:", supported.supported)

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Create operations

create_operation(options: OperationOptions) -> OperationResponse
Options:
  • action (required) – "convert" | "compress" | "merge" | "zip" | "share" | "lock" | "unlock" | "reset_password".
  • file_keys (required) – array of file keys from upload.
  • parameters (optional) – action‑specific parameters.
  • notes (optional) – user metadata.
Examples: 
# Convert PDF to PNG
client.create_operation(
    action="convert",
    file_keys=[upload_result.file_key],
    parameters={"convert_to": "png"},
    notes={"userId": "user-123"}
)

# Compress
client.create_operation(
    action="compress",
    file_keys=[upload_result.file_key],
    parameters={"compression_value": "recommended"}
)

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Convenience helpers

The client exposes shorthand helpers: 
client.convert(file_keys, convert_to, notes=None)
client.compress(file_keys, compression_value="recommended", notes=None)
client.merge(file_keys, notes=None)
client.zip(file_keys, notes=None)
client.share(file_keys, notes=None)
client.lock_pdf(file_keys, password, notes=None)
client.unlock_pdf(file_keys, password, notes=None)
client.reset_pdf_password(file_keys, old_password, new_password, notes=None)

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Status & polling

get_status(options: StatusOptions) -> StatusResponse
poll_status(options: PollStatusOptions) -> StatusResponse
Examples: 
# Single status fetch
status = client.get_status(main_task_id="task-123")

# Poll until completion
final_status = client.poll_status(
    main_task_id="task-123",
    interval=2000,
    timeout=300000,
    on_update=lambda status: print(f"Status: {status.operation_status}")
)

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Complete workflow example

from d3_client import D3Client, D3APIError, D3ValidationError
import os

def process_file():
    client = D3Client(
        api_key=os.getenv("D3_API_KEY"),
        base_url="https://api.dragdropdo.com"
    )

    try:
        # 1. Upload
        upload_result = client.upload_file(
            file="./document.pdf",
            file_name="document.pdf"
        )

        # 2. Check support
        supported = client.check_supported_operation(
            ext="pdf",
            action="convert",
            parameters={"convert_to": "png"}
        )
        if not supported.supported:
            raise ValueError("Convert to PNG is not supported")

        # 3. Create operation
        operation = client.convert(
            [upload_result.file_key],
            "png",
            notes={"userId": "user-123", "source": "api"}
        )

        # 4. Poll
        status = client.poll_status(
            main_task_id=operation.main_task_id,
            interval=2000
        )

        if status.operation_status == "completed":
            for file in status.files_data:
                print(f"Download: {file.download_link}")
    except D3APIError as e:
        print(f"API Error ({e.status_code}): {e.message}")
    except D3ValidationError as e:
        print(f"Validation Error: {e.message}")
    except Exception as e:
        print(f"Error: {e}")

process_file()