# Python

The Python SDK is the Python client for the `antd` daemon.

## Install

```bash
pip install antd[rest]
pip install antd[grpc]
pip install antd[all]
```

## Connect to the daemon

```python
from antd import AntdClient, AsyncAntdClient, discover_daemon_url

# REST transport by default
client = AntdClient()

# Async REST client
async_client = AsyncAntdClient()

# Explicit gRPC transport
grpc_client = AntdClient(transport="grpc", target="localhost:50051")

# Use discovery helpers if antd chose a non-default port
base_url = discover_daemon_url() or "http://localhost:8082"
discovered_client = AntdClient(base_url=base_url)
```

## Store and retrieve data

For upload examples in this section, start `antd` in a write-enabled mode first. On the default network, that means wallet plus EVM payment configuration. On a local devnet, `ant dev start` provisions that for you.

```python
from antd import AntdClient

client = AntdClient()
status = client.health()
assert status.ok

result = client.data_put_public(b"Hello from Python!")
print(result.address)

data = client.data_get_public(result.address)
assert data == b"Hello from Python!"
print(data.decode())
```

## Type mappings

| Autonomi type          | Python type                 |
| ---------------------- | --------------------------- |
| `HealthStatus`         | `antd.HealthStatus`         |
| `PutResult`            | `antd.PutResult`            |
| `WalletAddress`        | `antd.WalletAddress`        |
| `WalletBalance`        | `antd.WalletBalance`        |
| `PrepareUploadResult`  | `antd.PrepareUploadResult`  |
| `FinalizeUploadResult` | `antd.FinalizeUploadResult` |
| Raw data               | `bytes`                     |

## Error handling

```python
from antd import AntdClient, AntdError, NotFoundError, PaymentError

client = AntdClient()

try:
    client.data_get_public("nonexistent_address")
except NotFoundError:
    print("Data not found")
except PaymentError:
    print("Insufficient funds")
except AntdError as error:
    print(error)
```

REST and gRPC share the same high-level API, but wallet operations and `payment_mode` are REST-only.

## Full API reference

For all available daemon endpoints, see the [REST API](/developers/sdk/install/reference/rest-api.md).


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