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

# Generate ledger key parameters with a symbol key using the Python SDK

> Generate ledger key parameters with a symbol key using the Python SDK

In the [`increment` example contract] stores an integer value in a ledger entry that is identified by a key with the symbol `COUNTER`. The value of this ledger key can be derived using the following code snippets.

```python theme={"theme":{"light":"github-light","dark":"github-dark"}}
from stellar_sdk import xdr, scval, Address

def get_ledger_key_symbol(contract_id: str, symbol_text: str) -> str:
    ledger_key = xdr.LedgerKey(
        type=xdr.LedgerEntryType.CONTRACT_DATA,
        contract_data=xdr.LedgerKeyContractData(
            contract=Address(contract_id).to_xdr_sc_address(),
            key=scval.to_symbol(symbol_text),
            durability=xdr.ContractDataDurability.PERSISTENT
        ),
    )
    return ledger_key.to_xdr()

print(
    get_ledger_key_symbol(
        "CCPYZFKEAXHHS5VVW5J45TOU7S2EODJ7TZNJIA5LKDVL3PESCES6FNCI",
        "COUNTER"
    )
)
```

[`increment` example contract]: ../../smart-contracts/getting-started/storing-data