bananopie 0.1.3.1

A python library to simplify sending and receiving Banano. Also a RPC wrapper.

Bananopie

Bananopie is a python library for the Banano cryptocurrency. It aims to be the python equivalent of Banano.js, and not just a RPC wrapper (Sending, receiving, changing rep functions are very high level).

Installation

pip install bananopie

Bananopie is on pypi.

Notes

• There is an outdated fork of Bananopie for Nano, also made by me, called nanohakase. It should suit most of your needs, but if you need new Bananopie features, fork Bananopie, change the work difficulty to FFFFFFF800000000, decimals to 31, and you should be good to go.
• When running on Replit (ew), installing Bananopie may fail if you do not have gcc installed (nix package: libgccjit).

Quick Start

First, start with a RPC class, for read only

from bananopie import *
rpc = RPC("https://kaliumapi.appditto.com/api")

#check current blockcount
print(rpc.get_block_count()["count"])

#get last 10 transactions of JungleTV
print(rpc.get_account_history("ban_1jung1eb3uomk1gsx7w6w7toqrikxm5pgn5wbsg5fpy96ckpdf6wmiuuzpca", count=10)["history"])

#check balance of JungleTV
print(raw_to_whole(int(rpc.get_account_balance("ban_1jung1eb3uomk1gsx7w6w7toqrikxm5pgn5wbsg5fpy96ckpdf6wmiuuzpca")["balance"])))

For sending/receiving transactions, use a Wallet.

from bananopie import RPC, Wallet
rpc = RPC("https://kaliumapi.appditto.com/api")

my_account = Wallet(rpc, seed="seed here", index=0)

#or generate a new one
my_new_account = Wallet(rpc, index=0)

print(my_new_account.seed)

#get address of self
print(my_account.get_address())

#get balance of self
print(my_account.get_balance())

#send 1 banano to the faucet development fund
print(my_account.send("ban_3pdripjhteyymwjnaspc5nd96gyxgcdxcskiwwwoqxttnrncrxi974riid94", "1"))

#receive funds
my_account.receive_all()

#change rep
my_account.change_rep("ban_3catgir1p6b1edo5trp7fdb8gsxx4y5ffshbphj73zzy5hu678rsry7srh8b")

#change seed index
my_account.index = 2

Bananopie can also generate work, albeit slowly. This is useful when using node that don't support generating work. Also, the legacy parameter can be passed to the RPC class when the RPC supports the deprecated pending RPC call instead of the newer receivable call.

from bananopie import RPC, Wallet

no_work_rpc = RPC("https://public.node.jungletv.live/rpc", legacy=True)

my_work_account = Wallet(no_work_rpc, seed="seed here", index=0, try_work=True)

#will generate work locally!
my_work_account.send("ban_3pdripjhteyymwjnaspc5nd96gyxgcdxcskiwwwoqxttnrncrxi974riid94", "0.0042")

Utility functions are also provided.

import bananopie

#whole to raw banano
print(bananopie.whole_to_raw("492.2"))

#raw to whole banano
print(bananopie.raw_to_whole(1900000000000000000000000000))

Documentation

Also see the Nano RPC docs for information on what rpc call wrapper functions return.

RPC (Class)

Parameters:

• rpc_url (str): IP or URL of node
• auth (str or bool, Default: False): Optional HTTP Authorization header
• legacy (bool, Default: False): If True, will use 'pending' instead of 'receivable'

Sample:

rpc = RPC("https://kaliumapi.appditto.com/api")

Properties:

• rpc_url (str): IP or URL of node
• auth (str or bool): Optional HTTP Authorization header

Methods:

call (Function)

RPC call. Intended for internal use, but useful for RPC calls that aren't directly implemented.

Parameters:

• payload (dictionary): Payload to send to node

Sample:

rpc.call({"action": "block_count"})

Returns: Response of RPC call (JSON dictionary)

get_block_count (Function)

Get network block count.

Parameters None

Returns: See Nano RPC Docs

get_block_info (Function)

Get block info for hash.

Parameters

• block (st): Block hash

Returns: See Nano RPC Docs

get_blocks (Function)

Get blocks.

Parameters

• blocks (list[str]): List of block hashes to get information on

Returns: See Nano RPC Docs

get_blocks_info (Function)

Get blocks, with more detailed information.

Parameters

• blocks (list[str]): List of block hashes to get information on

Returns: See Nano RPC Docs

get_representatives (Function)

Get list of network representatives and their weight

Parameters None

Returns: See Nano RPC Docs

get_representatives_online (Function)

Get list of network representatives that have recently voted

Parameters None

Returns: See Nano RPC Docs

get_account_history (Function)

Get account history (confirmed and received transaction list)

Parameters

• account (str): Address of account
• count (int, Default: -1): Optional parameter to specify amount of transactions to return. -1 means all, or at least as much as the node will allow
• head (str or None, Default: None): Block hash to start from, defaults to latest block hash if omitted
• account_filter (list[str] or None, Default: None): List of addresses to only show sends/receives from. Please note that some public nodes will ignore this parameter

Returns: See Nano RPC Docs

get_account_info (Function)

Get account information, like height, frontier, balance, etc

Parameters

• account (str): Address of account

Returns: See Nano RPC Docs

get_account_balance (Function)

Get account balance

Parameters

• account (str): Address of account

Returns: See Nano RPC Docs

get_account_representative (Function)

Get account representative

Parameters

• account (str): Address of account

Returns: See Nano RPC Docs

get_accounts_representatives (Function)

Get representatives of accounts

Parameters

• account (list[str]): List of addresses

Returns: See Nano RPC Docs

get_account_weight (Function)

Get delegated weight of representative

Parameters

• account (str): Address of representative

Returns: See Nano RPC Docs

get_receivable (Function)

Get receivable transactions for account

Parameters

• account (str): Address of representative
• count (int, Default: 20): Optional parameter to specify max amount of receivable transactions to return
• threshold (int or None, Default: None): Optional parameter to filter out any receivable transactions with value below the threshold (in raw)

Returns: See Nano RPC Docs

Wallet (class)

Parameters:

• rpc (RPC): A RPC class
• seed (str or None, Default: None): 64 character hex seed, if None, will generate a seed by itself. Private keys are derived from the seed.
• index (int, Default: 0): Optional parameter that is the index of the seed. Any number from 0 to 4294967295. Each index of the seed is a different private key, and so different address.
• try_work (bool, Default: False): If True, will try to generate work locally instead of asking node for work (and no work provided). Good to use if node does not support generating own work.

Sample:

my_wallet = Wallet(RPC("https://kaliumapi.appditto.com/api"), "seed here", 0)

Properties:

• rpc_url (str): IP or URL of node
• seed (str): Banano seed (64 character hex string)
• index (int): Seed index. Change this property to change the wallet seed index.

Methods

send_process (Function)

Internal use function to send a process RPC call

Parameters

• block (dictionary): block content
• subtype (str): Send, receive, or change

Returns See Nano RPC Docs

send (Function)

High level function to send Banano

Parameters

• to (str): Address to send to
• amount (str): Amount of Banano to send (in whole, not raw)
• work (str or bool, Default: False): Leave it as False to ask node to generate work (passes do_work). Put in a work string if work generated locally
• previous (str or None, Default: None): Previous block hash. Otherwise, address' frontier block hash used

Sample:

my_wallet = Wallet(RPC("https://kaliumapi.appditto.com/api"), "seed here", 0)
my_account.send("ban_3pdripjhteyymwjnaspc5nd96gyxgcdxcskiwwwoqxttnrncrxi974riid94", "1")

Returns See Nano RPC Docs

send_all (Function)

High level function to send all Banano

Parameters

• to (str): Address to send to
• work (str or bool, Default: False): Leave it as False to ask node to generate work (passes do_work). Put in a work string if work generated locally
• previous (str or None, Default: None): Previous block hash. Otherwise, address' frontier block hash used

Sample:

my_wallet = Wallet(RPC("https://kaliumapi.appditto.com/api"), "seed here", 0)
my_account.send_all("ban_3pdripjhteyymwjnaspc5nd96gyxgcdxcskiwwwoqxttnrncrxi974riid94")

Returns See Nano RPC Docs

receive_specific (Function)

Receive a specific block

Parameters

• hash (str): Block hash to receive
• work (str or bool, Default: False): Leave it as False to ask node to generate work (passes do_work). Put in a work string if work generated locally
• previous (str or None, Default: None): Previous block hash. Otherwise, address' frontier block hash used

Returns See Nano RPC Docs

receive_all (Function)

Receive all (technically, 20) receivable transactions

Parameters

• count (int, Default: 20): Optional parameter to specify max amount of receivable transactions to receive
• threshold (int or None, Default: None): Optional parameter to not receive any receivable transactions with value below the threshold (in whole, not raw)

Sample:

my_wallet = Wallet(RPC("https://kaliumapi.appditto.com/api"), "seed here", 0)
my_account.receive_all()

Returns

• A list of block hashes that were received (See Nano RPC Docs)

change_rep (Function)

Change account representative

Parameters

• new_representative (str): Representative Banano address to change to
• work (str or bool, Default: False): Leave it as False to ask node to generate work (passes do_work). Put in a work string if work generated locally
• previous (str or None, Default: None): Previous block hash. Otherwise, address' frontier block hash used

Sample:

my_wallet = Wallet(RPC("https://kaliumapi.appditto.com/api"), "seed here", 0)
my_account.change_rep("ban_3catgir1p6b1edo5trp7fdb8gsxx4y5ffshbphj73zzy5hu678rsry7srh8b")

Returns See Nano RPC Docs

sign_message (Function)

Sign utf-8 message with private key at current index of current seed

Parameters

• message (str): utf-8 message to sign

Returns str, Hex signature

sign_message_dummy_block (Function)

Sign utf-8 message as a dummy block (making sure ledger devices can also sign) with private key at current index of current seed

Parameters

• message (str): utf-8 message to sign

Returns str, Hex signature

get_public_key (Function)

Get public key at current index of current seed

Parameters None

Returns str, Hex public key

get_address (Function)

Get address at current index of current seed

Parameters None

Returns str, Banano address

get_balance (Function)

Double wrapped function to get balance of self (see RPC's get_account_balance)

get_receivable (Function)

Double wrapped function to get receivable blocks (see RPC's get_receivable)

get_receivable_whole_threshold (Function)

Double wrapped function to get receivable blocks (see RPC's get_receivable), except threshold parameter is in whole Banano, not raw

get_representative (Function)

Double wrapped function to get representative of self (see RPC's get_account_representative)

get_account_info (Function)

Double wrapped function to get account info of self (see RPC's get_account_info)

get_account_history (Function)

Double wrapped function to get account info of self (see RPC's get_account_history)

generate_seed (static Function)

Generate a random seed using os.urandom

Parameters None

Sample:

print(Wallet.generate_seed())

Returns 64 character hex seed

Util

Properties

• BANANO_DECIMALS (int): Amount of decimals that Banano has (29)
• PREAMBLE (str): Hex string to prepend when signing
• BANANO_WORK (str): Hex string of Banano's work threshold/minimum

Methods

encode_base32, decode_base32, bytes_to_hex, hex_to_bytes, utf8_to_bytes, random_bytes, get_private_key_from_seed, get_public_key_from_private_key, get_address_from_public_key, get_public_key_from_address, hash_block, sign, sign_message_dummy_block, gen_dummy_block_hash are internal use Functions that are currently undocumented. Look at /bananopie/util.py to see what they do.

verify_message (Function)

Verifies whether signed message is real

Parameters

• public_key (str): Hex public key
• signature (str): Hex signature
• claimed_message (str): utf-8 message that was allegedly signed

Returns bool, True if message verified, False if message not verified

verify_message_dummy_block (Function)

Verifies whether signed message (with dummy block) is real

Parameters

• public_key (str): Hex public key
• signature (str): Hex signature
• claimed_message (str): utf-8 message (with dummy block) that was allegedly signed

Returns bool, True if message (with dummy block) verified, False if message (with dummy block) not verified

whole_to_raw (Function)

Converts whole Banano to raw Banano

Parameters

• whole (str): Whole amount of Banano

Returns int, that is raw amount of Banano

raw_to_whole (Function)

Converts raw Banano to whole Banano (Cuts off at 2 decimal places by default)

Parameters

• raw (int): Raw amount of Banano
• precision (int, Default: 2): Decimal places to cut off at

Returns int, that is whole amount of Banano

raw_to_whole_no_round (Function)

Converts raw Banano to whole Banano, without rounding

Parameters

• raw (int): Raw amount of Banano

Returns str, that is unrounded whole amount of Banano

gen_work_random (Function)

Generate work given block's previous hash (or if opening block, account public key), and threshold. Generates work using psuedorandom generator.

Parameters

• hash (str): Hex previous hash of block / account public key
• threshold (str): Hex minimum work threshold

Returns str, that is hex of work

gen_work_deterministic (Function)

Generate work given block's previous hash (or if opening block, account public key), and threshold. Generates work deterministically.

Parameters

• hash (str): Hex previous hash of block / account public key
• threshold (str): Hex minimum work threshold

Returns str, that is hex of work

gen_work (Function)

Generate work given block's previous hash (or if opening block, account public key). Basically a wrapper for gen_work_deterministic with threshold being the hardcoded Banano default.

Parameters

• hash (str): Hex previous hash of block / account public key

Returns str, that is hex of work

verify_work (Function)

Verify whether work is valid or not, given previous hash of block (or if opening block, account public key).

Parameters

• hash (str): Hex previous hash of block / account public key
• work (str): Hex of work

Returns bool, whether the work is valid or not