Symbol SDK
Project description
Symbol-SDK
Python SDK for interacting with the Symbol and NEM blockchains.
Most common functionality is grouped under facades so that the same programming paradigm can be used for interacting with both Symbol and NEM.
Sending a Transaction
To send a transaction, first create a facade for the desired network:
Symbol
from symbolchain.CryptoTypes import PrivateKey
from symbolchain.facade.SymbolFacade import SymbolFacade
facade = SymbolFacade('testnet')
NEM
from symbolchain.CryptoTypes import PrivateKey
from symbolchain.facade.SymbolFacade import SymbolFacade
facade = SymbolFacade('testnet')
Second, describe the transaction using a Python dictionary. For example, a transfer transaction can be described as follows:
Symbol
transaction = facade.transaction_factory.create({
'type': 'transfer_transaction_v1',
'signer_public_key': '87DA603E7BE5656C45692D5FC7F6D0EF8F24BB7A5C10ED5FDA8C5CFBC49FCBC8',
'fee': 1000000,
'deadline': 41998024783,
'recipient_address': 'TCHBDENCLKEBILBPWP3JPB2XNY64OE7PYHHE32I',
'mosaics': [
{'mosaic_id': 0x7CDF3B117A3C40CC, 'amount': 1000000}
]
})
NEM
transaction = facade.transaction_factory.create({
'type': 'transfer_transaction_v1',
'signer_public_key': 'A59277D56E9F4FA46854F5EFAAA253B09F8AE69A473565E01FD9E6A738E4AB74',
'fee': 0x186A0,
'timestamp': 191205516,
'deadline': 191291916,
'recipient_address': 'TALICE5VF6J5FYMTCB7A3QG6OIRDRUXDWJGFVXNW',
'amount': 5100000
})
Third, sign the transaction and attach the signature:
private_key = PrivateKey('EDB671EB741BD676969D8A035271D1EE5E75DF33278083D877F23615EB839FEC')
signature = facade.sign_transaction(facade.KeyPair(private_key), transaction)
json_payload = facade.transactionFactory.attachSignature(transaction, signature)
Finally, send the payload to the desired network using the specified node endpoint:
Symbol: PUT /transactions
NEM: POST /transaction/announce
NEM Cheat Sheet
In order to simplify the learning curve for NEM and Symbol usage, the SDK uses Symbol terminology for shared Symbol and NEM concepts. Where appropriate, NEM terminology is replaced with Symbol terminology, including the names of many of the NEM transactions. The mapping of NEM transactions to SDK descriptors can be found in the following table:
NEM name (used in docs) | SDK descriptor name |
---|---|
ImportanceTransfer transaction | account_key_link_transaction_v1 |
MosaicDefinitionCreation transaction | mosaic_definition_transaction_v1 |
MosaicSupplyChange transaction | mosaic_supply_change_transaction_v1 |
MultisigAggregateModification transaction | multisig_account_modification_transaction_v1 multisig_account_modification_transaction_v2 |
MultisigSignature transaction or Cosignature transaction | cosignature_v1 |
Multisig transaction | multisig_transaction_v1 |
ProvisionNamespace transaction | namespace_registration_transaction_v1 |
Transfer transaction | transfer_transaction_v1 transfer_transaction_v2 |
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