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formance-sdk-python

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formance-sdk-python

Python Client SDK Generated by Speakeasy

pipPyPI
Version
7.0.0
Maintainers
1

formance-sdk-python

Summary

Formance Stack API: Open, modular foundation for unique payments flows

Introduction

This API is documented in OpenAPI format.

Authentication

Formance Stack offers one forms of authentication:

  • OAuth2 OAuth2 - an open protocol to allow secure authorization in a simple and standard method from web, mobile and desktop applications.

Table of Contents

SDK Installation

[!NOTE] Python version upgrade policy

Once a Python version reaches its official end of life date, a 3-month grace period is provided for users to upgrade. Following this grace period, the minimum python version supported in the SDK will be updated.

The SDK can be installed with uv, pip, or poetry package managers.

uv

uv is a fast Python package installer and resolver, designed as a drop-in replacement for pip and pip-tools. It's recommended for its speed and modern Python tooling capabilities.

uv add formance-sdk-python

PIP

PIP is the default package installer for Python, enabling easy installation and management of packages from PyPI via the command line.

pip install formance-sdk-python

Poetry

Poetry is a modern tool that simplifies dependency management and package publishing by using a single pyproject.toml file to handle project metadata and dependencies.

poetry add formance-sdk-python

Shell and script usage with uv

You can use this SDK in a Python shell with uv and the uvx command that comes with it like so:

uvx --from formance-sdk-python python

It's also possible to write a standalone Python script without needing to set up a whole project like so:

#!/usr/bin/env -S uv run --script
# /// script
# requires-python = ">=3.10"
# dependencies = [
#     "formance-sdk-python",
# ]
# ///

from formance_sdk_python import SDK

sdk = SDK(
  # SDK arguments
)

# Rest of script here...

Once that is saved to a file, you can run it with uv run script.py where script.py can be replaced with the actual file name.

IDE Support

PyCharm

Generally, the SDK will work well with most IDEs out of the box. However, when using PyCharm, you can enjoy much better integration with Pydantic by installing an additional plugin.

SDK Example Usage

Example

# Synchronous Example
from formance_sdk_python import SDK


with SDK() as sdk:

    res = sdk.get_versions()

    assert res.get_versions_response is not None

    # Handle response
    print(res.get_versions_response)

The same SDK client can also be used to make asynchronous requests by importing asyncio.

# Asynchronous Example
import asyncio
from formance_sdk_python import SDK

async def main():

    async with SDK() as sdk:

        res = await sdk.get_versions_async()

        assert res.get_versions_response is not None

        # Handle response
        print(res.get_versions_response)

asyncio.run(main())

Available Resources and Operations

Available methods

SDK

Auth.V1

Ledger

Ledger.V1

Ledger.V2

Orchestration.V1

Orchestration.V2

Payments.V1

Payments.V3

Reconciliation.V1

Search.V1

Wallets.V1

Webhooks.V1

File uploads

Certain SDK methods accept file objects as part of a request body or multi-part request. It is possible and typically recommended to upload files as a stream rather than reading the entire contents into memory. This avoids excessive memory consumption and potentially crashing with out-of-memory errors when working with very large files. The following example demonstrates how to attach a file stream to a request.

[!TIP]

For endpoints that handle file uploads bytes arrays can also be used. However, using streams is recommended for large files.

from formance_sdk_python import SDK
from formance_sdk_python.models import shared


with SDK(
    security=shared.Security(
        client_id="<YOUR_CLIENT_ID_HERE>",
        client_secret="<YOUR_CLIENT_SECRET_HERE>",
    ),
) as sdk:

    res = sdk.ledger.v2.import_logs(request={
        "v2_import_logs_request": open("example.file", "rb"),
        "ledger": "ledger001",
    })

    assert res is not None

    # Handle response
    print(res)

Retries

Some of the endpoints in this SDK support retries. If you use the SDK without any configuration, it will fall back to the default retry strategy provided by the API. However, the default retry strategy can be overridden on a per-operation basis, or across the entire SDK.

To change the default retry strategy for a single API call, simply provide a RetryConfig object to the call:

from formance_sdk_python import SDK
from formance_sdk_python.utils import BackoffStrategy, RetryConfig


with SDK() as sdk:

    res = sdk.get_versions(,
        RetryConfig("backoff", BackoffStrategy(1, 50, 1.1, 100), False))

    assert res.get_versions_response is not None

    # Handle response
    print(res.get_versions_response)

If you'd like to override the default retry strategy for all operations that support retries, you can use the retry_config optional parameter when initializing the SDK:

from formance_sdk_python import SDK
from formance_sdk_python.utils import BackoffStrategy, RetryConfig


with SDK(
    retry_config=RetryConfig("backoff", BackoffStrategy(1, 50, 1.1, 100), False),
) as sdk:

    res = sdk.get_versions()

    assert res.get_versions_response is not None

    # Handle response
    print(res.get_versions_response)

Error Handling

SDKBaseError is the base class for all HTTP error responses. It has the following properties:

PropertyTypeDescription
err.messagestrError message
err.status_codeintHTTP response status code eg 404
err.headershttpx.HeadersHTTP response headers
err.bodystrHTTP body. Can be empty string if no body is returned.
err.raw_responsehttpx.ResponseRaw HTTP response
err.dataOptional. Some errors may contain structured data. See Error Classes.

Example

from formance_sdk_python import SDK
from formance_sdk_python.models import errors, shared


with SDK(
    security=shared.Security(
        client_id="<YOUR_CLIENT_ID_HERE>",
        client_secret="<YOUR_CLIENT_SECRET_HERE>",
    ),
) as sdk:
    res = None
    try:

        res = sdk.ledger.get_info()

        assert res.v2_config_info_response is not None

        # Handle response
        print(res.v2_config_info_response)


    except errors.SDKBaseError as e:
        # The base class for HTTP error responses
        print(e.message)
        print(e.status_code)
        print(e.body)
        print(e.headers)
        print(e.raw_response)

        # Depending on the method different errors may be thrown
        if isinstance(e, errors.V2ErrorResponse):
            print(e.data.details)  # Optional[str]
            print(e.data.error_code)  # shared.V2ErrorsEnum
            print(e.data.error_message)  # str

Error Classes

Primary error:

Less common errors (14)

Network errors:

Inherit from SDKBaseError:

* Check the method documentation to see if the error is applicable.

Server Selection

Select Server by Index

You can override the default server globally by passing a server index to the server_idx: int optional parameter when initializing the SDK client instance. The selected server will then be used as the default on the operations that use it. This table lists the indexes associated with the available servers:

#ServerVariablesDescription
0http://localhostlocal server
1https://{organization}.{environment}.formance.cloudenvironment
organization		A per-organization and per-environment API

If the selected server has variables, you may override its default values through the additional parameters made available in the SDK constructor:

VariableParameterSupported ValuesDefaultDescription
environmentenvironment: models.ServerEnvironment- "eu.sandbox"
- "eu-west-1"
- "us-east-1"		"eu.sandbox"The environment name. Defaults to the production environment.
organizationorganization: strstr"orgID-stackID"The organization name. Defaults to a generic organization.

Example

from formance_sdk_python import SDK


with SDK(
    server_idx=1,
    environment="us-east-1",
    organization="orgID-stackID",
) as sdk:

    res = sdk.get_versions()

    assert res.get_versions_response is not None

    # Handle response
    print(res.get_versions_response)

Override Server URL Per-Client

The default server can also be overridden globally by passing a URL to the server_url: str optional parameter when initializing the SDK client instance. For example:

from formance_sdk_python import SDK


with SDK(
    server_url="https://orgID-stackID.eu.sandbox.formance.cloud",
) as sdk:

    res = sdk.get_versions()

    assert res.get_versions_response is not None

    # Handle response
    print(res.get_versions_response)

Custom HTTP Client

The Python SDK makes API calls using the httpx HTTP library. In order to provide a convenient way to configure timeouts, cookies, proxies, custom headers, and other low-level configuration, you can initialize the SDK client with your own HTTP client instance. Depending on whether you are using the sync or async version of the SDK, you can pass an instance of HttpClient or AsyncHttpClient respectively, which are Protocol's ensuring that the client has the necessary methods to make API calls. This allows you to wrap the client with your own custom logic, such as adding custom headers, logging, or error handling, or you can just pass an instance of httpx.Client or httpx.AsyncClient directly.

For example, you could specify a header for every request that this sdk makes as follows:

from formance_sdk_python import SDK
import httpx

http_client = httpx.Client(headers={"x-custom-header": "someValue"})
s = SDK(client=http_client)

or you could wrap the client with your own custom logic:

from formance_sdk_python import SDK
from formance_sdk_python.httpclient import AsyncHttpClient
import httpx

class CustomClient(AsyncHttpClient):
    client: AsyncHttpClient

    def __init__(self, client: AsyncHttpClient):
        self.client = client

    async def send(
        self,
        request: httpx.Request,
        *,
        stream: bool = False,
        auth: Union[
            httpx._types.AuthTypes, httpx._client.UseClientDefault, None
        ] = httpx.USE_CLIENT_DEFAULT,
        follow_redirects: Union[
            bool, httpx._client.UseClientDefault
        ] = httpx.USE_CLIENT_DEFAULT,
    ) -> httpx.Response:
        request.headers["Client-Level-Header"] = "added by client"

        return await self.client.send(
            request, stream=stream, auth=auth, follow_redirects=follow_redirects
        )

    def build_request(
        self,
        method: str,
        url: httpx._types.URLTypes,
        *,
        content: Optional[httpx._types.RequestContent] = None,
        data: Optional[httpx._types.RequestData] = None,
        files: Optional[httpx._types.RequestFiles] = None,
        json: Optional[Any] = None,
        params: Optional[httpx._types.QueryParamTypes] = None,
        headers: Optional[httpx._types.HeaderTypes] = None,
        cookies: Optional[httpx._types.CookieTypes] = None,
        timeout: Union[
            httpx._types.TimeoutTypes, httpx._client.UseClientDefault
        ] = httpx.USE_CLIENT_DEFAULT,
        extensions: Optional[httpx._types.RequestExtensions] = None,
    ) -> httpx.Request:
        return self.client.build_request(
            method,
            url,
            content=content,
            data=data,
            files=files,
            json=json,
            params=params,
            headers=headers,
            cookies=cookies,
            timeout=timeout,
            extensions=extensions,
        )

s = SDK(async_client=CustomClient(httpx.AsyncClient()))

Authentication

Per-Client Security Schemes

This SDK supports the following security scheme globally:

NameTypeScheme
client_id
client_secret
token_url		oauth2OAuth2 Client Credentials Flow

You can set the security parameters through the security optional parameter when initializing the SDK client instance. For example:

from formance_sdk_python import SDK
from formance_sdk_python.models import shared


with SDK(
    security=shared.Security(
        client_id="<YOUR_CLIENT_ID_HERE>",
        client_secret="<YOUR_CLIENT_SECRET_HERE>",
    ),
) as sdk:

    res = sdk.get_versions()

    assert res.get_versions_response is not None

    # Handle response
    print(res.get_versions_response)

Resource Management

The SDK class implements the context manager protocol and registers a finalizer function to close the underlying sync and async HTTPX clients it uses under the hood. This will close HTTP connections, release memory and free up other resources held by the SDK. In short-lived Python programs and notebooks that make a few SDK method calls, resource management may not be a concern. However, in longer-lived programs, it is beneficial to create a single SDK instance via a context manager and reuse it across the application.

from formance_sdk_python import SDK
def main():

    with SDK() as sdk:
        # Rest of application here...


# Or when using async:
async def amain():

    async with SDK() as sdk:
        # Rest of application here...

Debugging

You can setup your SDK to emit debug logs for SDK requests and responses.

You can pass your own logger class directly into your SDK.

from formance_sdk_python import SDK
import logging

logging.basicConfig(level=logging.DEBUG)
s = SDK(debug_logger=logging.getLogger("formance_sdk_python"))

Development

Maturity

This SDK is in beta, and there may be breaking changes between versions without a major version update. Therefore, we recommend pinning usage to a specific package version. This way, you can install the same version each time without breaking changes unless you are intentionally looking for the latest version.

Contributions

While we value open-source contributions to this SDK, this library is generated programmatically. Feel free to open a PR or a Github issue as a proof of concept and we'll do our best to include it in a future release!

SDK Created by Speakeasy

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