> ## Documentation Index
> Fetch the complete documentation index at: https://docs.theblockchainlibrary.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Web3.py Event Listening

> Listen to and decode smart contract events using web3.py.

# Web3.py Event Listening

Listen to and decode smart contract events using web3.py.

Listen to and decode smart contract events using web3.py.

## Explanation

web3.py's create\_filter sets up a log filter for a specific event. get\_all\_entries returns all matching logs in the block range. Indexed fields become args directly; non-indexed fields are ABI-decoded from the log data.

## Code

```python theme={null}
from web3 import Web3

w3 = Web3(Web3.HTTPProvider("https://rpc.ankr.com/eth"))

abi = [{
    "anonymous": False,
    "inputs": [
        {"indexed": True, "name": "from", "type": "address"},
        {"indexed": True, "name": "to", "type": "address"},
        {"indexed": False, "name": "value", "type": "uint256"},
    ],
    "name": "Transfer",
    "type": "event",
}]

contract = w3.eth.contract(address="0xTokenAddress", abi=abi)

# Create an event filter for the last 10 blocks
latest = w3.eth.block_number
event_filter = contract.events.Transfer.create_filter(
    from_block=latest - 10,
    to_block="latest"
)

for event in event_filter.get_all_entries():
    print(f"{event.args['from']} -> {event.args['to']}: {event.args['value']}")
```

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**Canonical knowledge ID:** `code-example:web3py-event-listening`