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add more examples scripts (#399)
* add more examples scripts * exclude tempfiles * delete tempfiles * remove external file and generate local pdf * Fix format --------- Co-authored-by: Michiel <michiel.bellengmail.com> Co-authored-by: Jerry <[email protected]>
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‎examples/more_examples/.env-example

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network="testnet"
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wallet_mnemonic="select calm scorpion mask furnace nerve fade slam bid suggest avoid remove half depend turn little midnight fossil submit cart sick glance inner slide"
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blockfrost_api_key="preprod...."

‎examples/more_examples/.gitignore

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.env
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/keys/*
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!keys/.gitkeep
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tempfile.pdf
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tempfile_copy.pdf

‎examples/more_examples/01_address.py

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import os
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from blockfrost import ApiError, ApiUrls, BlockFrostApi, BlockFrostIPFS
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from dotenv import load_dotenv
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from pycardano import *
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load_dotenv()
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network = os.getenv("network")
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wallet_mnemonic = os.getenv("wallet_mnemonic")
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if network == "testnet":
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base_url = ApiUrls.preprod.value
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cardano_network = Network.TESTNET
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else:
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base_url = ApiUrls.mainnet.value
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cardano_network = Network.MAINNET
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new_wallet = crypto.bip32.HDWallet.from_mnemonic(wallet_mnemonic)
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payment_key = new_wallet.derive_from_path(f"m/1852'/1815'/0'/0/0")
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staking_key = new_wallet.derive_from_path(f"m/1852'/1815'/0'/2/0")
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payment_skey = ExtendedSigningKey.from_hdwallet(payment_key)
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staking_skey = ExtendedSigningKey.from_hdwallet(staking_key)
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print("Enterprise address (only payment):")
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print("Payment Derivation path: m/1852'/1815'/0'/0/0")
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enterprise_address = Address(
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payment_part=payment_skey.to_verification_key().hash(), network=cardano_network
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)
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print(enterprise_address)
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print(" ")
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print("Staking enabled address:")
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print("Payment Derivation path: m/1852'/1815'/0'/0/0")
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print("Staking Derivation path: m/1852'/1815'/0'/2/0")
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staking_enabled_address = Address(
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payment_part=payment_skey.to_verification_key().hash(),
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staking_part=staking_skey.to_verification_key().hash(),
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network=cardano_network,
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)
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print(staking_enabled_address)
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print(" ")
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next_step = input("Press Enter to continue...")
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print(" ")
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for i in range(5):
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derivation_path = f"m/1852'/1815'/0'/0/{i}"
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payment_key = new_wallet.derive_from_path(derivation_path)
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payment_skey = ExtendedSigningKey.from_hdwallet(payment_key)
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enterprise_address = Address(
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payment_part=payment_skey.to_verification_key().hash(), network=cardano_network
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)
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print(f"Address {derivation_path}: {enterprise_address}")
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print(" ")
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next_step = input("Press Enter to continue...")
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print(" ")
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for i in range(5):
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derivation_path = f"m/1852'/1815'/0'/0/{i}"
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payment_key = new_wallet.derive_from_path(derivation_path)
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payment_skey = ExtendedSigningKey.from_hdwallet(payment_key)
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staking_enabled_address = Address(
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payment_part=payment_skey.to_verification_key().hash(),
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staking_part=staking_skey.to_verification_key().hash(),
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network=cardano_network,
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)
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print(f"Address {derivation_path}: {staking_enabled_address}")

‎examples/more_examples/02_query_address.py

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import os
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import sys
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from blockfrost import ApiError, ApiUrls, BlockFrostApi, BlockFrostIPFS
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from dotenv import load_dotenv
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from pycardano import *
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load_dotenv()
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network = os.getenv("network")
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wallet_mnemonic = os.getenv("wallet_mnemonic")
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blockfrost_api_key = os.getenv("blockfrost_api_key")
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if network == "testnet":
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base_url = ApiUrls.preprod.value
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cardano_network = Network.TESTNET
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else:
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base_url = ApiUrls.mainnet.value
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cardano_network = Network.MAINNET
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new_wallet = crypto.bip32.HDWallet.from_mnemonic(wallet_mnemonic)
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payment_key = new_wallet.derive_from_path(f"m/1852'/1815'/0'/0/0")
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staking_key = new_wallet.derive_from_path(f"m/1852'/1815'/0'/2/0")
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payment_skey = ExtendedSigningKey.from_hdwallet(payment_key)
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staking_skey = ExtendedSigningKey.from_hdwallet(staking_key)
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main_address = Address(
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payment_part=payment_skey.to_verification_key().hash(),
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staking_part=staking_skey.to_verification_key().hash(),
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network=cardano_network,
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)
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print(" ")
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print(f"Derived address: {main_address}")
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print(" ")
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api = BlockFrostApi(project_id=blockfrost_api_key, base_url=base_url)
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try:
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utxos = api.address_utxos(main_address)
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except Exception as e:
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if e.status_code == 404:
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print("Address does not have any UTXOs. ")
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if network == "testnet":
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print(
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"Request tADA from the faucet: https://docs.cardano.org/cardano-testnets/tools/faucet/"
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)
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else:
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print(e.message)
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sys.exit(1)
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print(f"hash \t\t\t\t\t\t\t\t\t amount")
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print(
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"--------------------------------------------------------------------------------------"
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)
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for utxo in utxos:
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tokens = ""
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for token in utxo.amount:
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if token.unit != "lovelace":
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tokens += f"{token.quantity} {token.unit} + "
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print(
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f"{utxo.tx_hash}#{utxo.tx_index} \t {int(utxo.amount[0].quantity)/1000000} ADA [{tokens}]"
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)

‎examples/more_examples/03_distribute.py

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import os
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import sys
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from blockfrost import ApiError, ApiUrls, BlockFrostApi, BlockFrostIPFS
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from dotenv import load_dotenv
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from pycardano import *
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load_dotenv()
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network = os.getenv("network")
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wallet_mnemonic = os.getenv("wallet_mnemonic")
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blockfrost_api_key = os.getenv("blockfrost_api_key")
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if network == "testnet":
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base_url = ApiUrls.preprod.value
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cardano_network = Network.TESTNET
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else:
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base_url = ApiUrls.mainnet.value
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cardano_network = Network.MAINNET
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new_wallet = crypto.bip32.HDWallet.from_mnemonic(wallet_mnemonic)
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payment_key = new_wallet.derive_from_path(f"m/1852'/1815'/0'/0/0")
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staking_key = new_wallet.derive_from_path(f"m/1852'/1815'/0'/2/0")
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payment_skey = ExtendedSigningKey.from_hdwallet(payment_key)
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staking_skey = ExtendedSigningKey.from_hdwallet(staking_key)
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main_address = Address(
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payment_part=payment_skey.to_verification_key().hash(),
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staking_part=staking_skey.to_verification_key().hash(),
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network=cardano_network,
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)
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print(" ")
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print(f"Derived address: {main_address}")
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print(" ")
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api = BlockFrostApi(project_id=blockfrost_api_key, base_url=base_url)
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try:
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utxos = api.address_utxos(main_address)
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except Exception as e:
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if e.status_code == 404:
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print("Address does not have any UTXOs. ")
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if network == "testnet":
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print(
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"Request tADA from the faucet: https://docs.cardano.org/cardano-testnets/tools/faucet/"
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)
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else:
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print(e.message)
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sys.exit(1)
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cardano = BlockFrostChainContext(project_id=blockfrost_api_key, base_url=base_url)
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builder = TransactionBuilder(cardano)
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for i in range(20):
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output = TransactionOutput(main_address, Value(4000000))
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builder.add_output(output)
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builder.add_input_address(main_address)
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signed_tx = builder.build_and_sign([payment_skey], change_address=main_address)
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result = cardano.submit_tx(signed_tx.to_cbor())
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print(f"Number of inputs: \t {len(signed_tx.transaction_body.inputs)}")
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print(f"Number of outputs: \t {len(signed_tx.transaction_body.outputs)}")
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print(f"Fee: \t\t\t {signed_tx.transaction_body.fee/1000000} ADA")
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print(f"Transaction submitted! ID: {result}")

‎examples/more_examples/04_consolidate.py

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import os
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import sys
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from blockfrost import ApiError, ApiUrls, BlockFrostApi, BlockFrostIPFS
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from dotenv import load_dotenv
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from pycardano import *
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load_dotenv()
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network = os.getenv("network")
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wallet_mnemonic = os.getenv("wallet_mnemonic")
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blockfrost_api_key = os.getenv("blockfrost_api_key")
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if network == "testnet":
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base_url = ApiUrls.preprod.value
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cardano_network = Network.TESTNET
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else:
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base_url = ApiUrls.mainnet.value
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cardano_network = Network.MAINNET
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new_wallet = crypto.bip32.HDWallet.from_mnemonic(wallet_mnemonic)
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payment_key = new_wallet.derive_from_path(f"m/1852'/1815'/0'/0/0")
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staking_key = new_wallet.derive_from_path(f"m/1852'/1815'/0'/2/0")
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payment_skey = ExtendedSigningKey.from_hdwallet(payment_key)
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staking_skey = ExtendedSigningKey.from_hdwallet(staking_key)
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main_address = Address(
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payment_part=payment_skey.to_verification_key().hash(),
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staking_part=staking_skey.to_verification_key().hash(),
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network=cardano_network,
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)
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print(" ")
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print(f"Derived address: {main_address}")
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print(" ")
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api = BlockFrostApi(project_id=blockfrost_api_key, base_url=base_url)
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try:
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utxos = api.address_utxos(main_address)
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except Exception as e:
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if e.status_code == 404:
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print("Address does not have any UTXOs. ")
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if network == "testnet":
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print(
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"Request tADA from the faucet: https://docs.cardano.org/cardano-testnets/tools/faucet/"
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)
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else:
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print(e.message)
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sys.exit(1)
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cardano = BlockFrostChainContext(project_id=blockfrost_api_key, base_url=base_url)
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builder = TransactionBuilder(cardano)
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inputs = []
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total_ada_used = 0
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for utxo in utxos:
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input = TransactionInput.from_primitive([utxo.tx_hash, utxo.tx_index])
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inputs.append(input)
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builder.add_input(input)
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total_ada_used += int(utxo.amount[0].quantity)
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output = TransactionOutput(main_address, Value(total_ada_used))
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tx_body = TransactionBody(inputs=inputs, outputs=[output], fee=100000)
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signature = payment_skey.sign(tx_body.hash())
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vk = PaymentVerificationKey.from_signing_key(payment_skey)
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vk_witnesses = [VerificationKeyWitness(vk, signature)]
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signed_tx = Transaction(tx_body, TransactionWitnessSet(vkey_witnesses=vk_witnesses))
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calculated_fee = fee(cardano, len(signed_tx.to_cbor()))
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total_ada_available = total_ada_used - calculated_fee
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output = TransactionOutput(main_address, Value(total_ada_available))
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tx_body = TransactionBody(inputs=inputs, outputs=[output], fee=calculated_fee)
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signature = payment_skey.sign(tx_body.hash())
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vk = PaymentVerificationKey.from_signing_key(payment_skey)
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vk_witnesses = [VerificationKeyWitness(vk, signature)]
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signed_tx = Transaction(tx_body, TransactionWitnessSet(vkey_witnesses=vk_witnesses))
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try:
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result = cardano.submit_tx(signed_tx.to_cbor())
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print(f"Number of inputs: \t {len(signed_tx.transaction_body.inputs)}")
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print(f"Number of outputs: \t {len(signed_tx.transaction_body.outputs)}")
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print(f"Fee: \t\t\t {signed_tx.transaction_body.fee/1000000} ADA")
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print(f"Transaction submitted! ID: {result}")
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except Exception as e:
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if "BadInputsUTxO" in str(e):
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print("Trying to spend an input that doesn't exist (or no longer exist).")
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elif "ValueNotConservedUTxO" in str(e):
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print(
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"Transaction not correctly balanced. Inputs and outputs (+fee) don't match."
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)
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else:
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print(e)

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