All Projects → nebulasio → neb.py

nebulasio / neb.py

Licence: other
Nebulas Python API

Programming Languages

python
139335 projects - #7 most used programming language
C++
36643 projects - #6 most used programming language

Projects that are alternatives of or similar to neb.py

nebPay.js
Nebulas payment Javascript SDK
Stars: ✭ 81 (+406.25%)
Mutual labels:  nebulas
neb.java
Java implementation of the Nebulas protocol
Stars: ✭ 30 (+87.5%)
Mutual labels:  nebulas
neb.php
Nebulas PHP API
Stars: ✭ 29 (+81.25%)
Mutual labels:  nebulas

neb.py

neb.py is the Nebulas compatible Python API. Users can sign/send transactions and deploy/call smart contract with it.

Installation

You can install this library via pip:

pip install neb-py

Usage

please refer to examples to learn how to use neb.py.

Account

from nebpysdk.src.account.Account import Account
# generate a new account
account = Account()
account2 = Account.new_account() #another way to create account
priv_key = "6c41a31b4e689e1441c930ce4c34b74cc037bd5e68bbd6878adb2facf62aa7f3"
account3 = Account(priv_key) #create account with given priv_key

# export account
account_json = account.to_key(bytes("passphrase".encode()))
print(account_json)

# load account
account = Account.from_key(account_json, bytes("passphrase".encode()))
print(account.get_address_str())
print(account.get_private_key())
print(account.get_public_key())

API

from nebpysdk.src.client.Neb import Neb
import json
neb = Neb("https://testnet.nebulas.io")

# getNebState
print(neb.api.getNebState().text)

# latestIrreversibleBlock
print(neb.api.latestIrreversibleBlock().text)

Transaction

from nebpysdk.src.account.Account import Account
from nebpysdk.src.core.Address import Address
from nebpysdk.src.core.Transaction import Transaction
from nebpysdk.src.core.TransactionBinaryPayload import TransactionBinaryPayload
from nebpysdk.src.core.TransactionCallPayload import TransactionCallPayload
from nebpysdk.src.client.Neb import Neb
import json

neb = Neb("https://testnet.nebulas.io")
keyJson = '{"version":4,"id":"814745d0-9200-42bd-a4df-557b2d7e1d8b","address":"n1H2Yb5Q6ZfKvs61htVSV4b1U2gr2GA9vo6","crypto":{"ciphertext":"fb831107ce71ed9064fca0de8d514d7b2ba0aa03aa4fa6302d09fdfdfad23a18","cipherparams":{"iv":"fb65caf32f4dbb2593e36b02c07b8484"},"cipher":"aes-128-ctr","kdf":"scrypt","kdfparams":{"dklen":32,"salt":"dddc4f9b3e2079b5cc65d82d4f9ecf27da6ec86770cb627a19bc76d094bf9472","n":4096,"r":8,"p":1},"mac":"1a66d8e18d10404440d2762c0d59d0ce9e12a4bbdfc03323736a435a0761ee23","machash":"sha3256"}}';
password = 'passphrase'

# prepare from&to addr
from_account = Account.from_key(keyJson, bytes(password.encode()))
from_addr = from_account.get_address_obj()
to_addr = Address.parse_from_string("n1JmhE82GNjdZPNZr6dgUuSfzy2WRwmD9zy")
print("from_addr", from_addr.string())
print("to_addr  ", to_addr.string())

# prepare transaction, get nonce first
resp = neb.api.getAccountState(from_addr.string()).text

print(resp)
resp_json = json.loads(resp)
print(resp_json)
nonce = int(resp_json['result']['nonce'])

chain_id = 1001
# PayloadType
payload_type = Transaction.PayloadType("binary")
# payload
payload = TransactionBinaryPayload("test").to_bytes()
# gasPrice
gas_price = 1000000
# gasLimit
gas_limit = 20000

# binary transaction example
tx = Transaction(chain_id, from_account, to_addr, 0, nonce + 1, payload_type, payload, gas_price, gas_limit)
tx.calculate_hash()
tx.sign_hash()
print(neb.api.sendRawTransaction(tx.to_proto()).text)


# call type
to_addr = Address.parse_from_string("n1oXdmwuo5jJRExnZR5rbceMEyzRsPeALgm")
func = "get"
arg = '["nebulas"]'
payload = TransactionCallPayload(func, arg).to_bytes()
payload_type = Transaction.PayloadType("call")
tx = Transaction(chain_id, from_account, to_addr, 0, nonce + 1, payload_type, payload, gas_price, gas_limit)
tx.calculate_hash()
tx.sign_hash()
print(neb.api.sendRawTransaction(tx.to_proto()).text)

Join in!

We are happy to receive bug reports, fixes, documentation enhancements, and other improvements.

Please report bugs via the github issue

Note that the project description data, including the texts, logos, images, and/or trademarks, for each open source project belongs to its rightful owner. If you wish to add or remove any projects, please contact us at [email protected].