Build Custom Transactions

const prepared = await wallet.buildTransaction({
  feePayer,
  instructions: [
    {
      programId: targetProgramId,
      accounts: [
        {
          pubkey: writableAccount,
          isWritable: true,
        },
        {
          pubkey: readonlyAccount,
        },
      ],
      data: Buffer.from(instructionData).toString('base64'),
    },
  ],
  addressLookupTableAccounts: [lookupTableAddress],
});

from swig_developer_sdk import SolanaAccountMeta, SolanaInstructionInput

prepared = await wallet.build_transaction(
    fee_payer=fee_payer,
    instructions=(
        SolanaInstructionInput(
            program_id=target_program_id,
            accounts=(
                SolanaAccountMeta(
                    pubkey=writable_account,
                    is_writable=True,
                ),
                SolanaAccountMeta(pubkey=readonly_account),
            ),
            data=instruction_data,
        ),
    ),
    address_lookup_table_accounts=(lookup_table_address,),
)