Getting Started with Smart Contract Platform - Python

Use the Python SDK to interact with Smart Contract Platform APIs, which allow you interact with smart contracts on the blockchain using the Developer Services platform.

This page provides short examples of how to install and use the Smart Contract Platform SDK. For complete examples, see the Sample Projects page. For more information see the Smart Contract Platform documentation.

Prerequisites

• Have Python installed.
• Have an active Circle Developer Account.
• Generate an API key to use in requests to the Circle API.
• Generate an entity secret to use in requests with the Smart Contract Platform SDK.

Although not a requirement for using the SDK, Circle recommends that you use a virtual environment for development. A Python virtual environment is an isolated environment that you can use to silo your project from the global Python environment.

Install the SDK

Use the following command to install the SDK with pip:

Shell

pip install circle-smart-contract-platform

Smart Contract Platform client

To start using the SDK, you first need to configure a client and initialize it with your API key and entity secret.

Import the client

The following example shows how to import the client and configure it to use your API key and entity secret:

Python

from circle.web3 import utils

client = utils.init_smart_contract_platform_client(
  api_key="Your API KEY",
  entity_secret="Your entity secret"
)

Import a smart contract

The following example shows how to import a smart contract using the client:

Python

from circle.web3 import smart_contract_platform

api_instance = smart_contract_platform.DeployImportApi(client)

# import contract
try:
    request = smart_contract_platform.ImportContractRequest.from_dict({
        "name": "UChildERC20Proxy",
        "address": "0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174",
        "blockchain": "MATIC"
    })
    response = api_instance.import_contract(request)
    print(response)
except smart_contract_platform.ApiException as e:
    print("Exception when calling DeployImportApi->import_contract: %s\n" % e)

Client configuration options

The client for the Smart Contract Platform SDK accepts the following configuration parameters:

Option	Required?	Description
api_key	Yes	The API key used to authenticate requests to the Circle API.
entity_secret	Yes	Your configured entity secret.
host	No	The base URL that overrides the default API URL of https://api.circle.com/v1/w3s.
user_agent	No	Custom user agent request header. If provided, it’s added before the default user agent header.