I stucked a little bit with a problem how to compute
new uniswap`s version 3 pool (earlier versions it called pair)
address based on 1 and 2
In the new uniswap v3.0 there is also one additional parameter
for computing pool address - fees amount in percents, defined like in sdk
with uint24 type.
From sdk`s computePoolAddress at the first times settled
with computing pool address problem there was one confused me part of the source
[defaultAbiCoder.encode(['address', 'address', 'uint24'], [token0.address, token1.address, fee])
And somewhy I decided to compute it using encodePacked (i.e. encode_abi_packed for python3 from eth_abi.packed) function. But it produced wrong result.
Look deeper in the uniswap v3.0 periphery pool conract - 3 clarified
my mistake. It turns out in version 3.0 using encode (i.e. encode_abi for python3 from eth_abi) function. A little bit more explanations here
So, coupled all together.
Main function to compute pool address with the aids of python3.
from web3 import Web3
from eth_abi.packed import encode_abi_packed
from eth_abi import encode_abi
def compute_pairs_address_with_target_v3(factory = '0x1F98431c8aD98523631AE4a59f267346ea31F984', token_0 = None, token_1 = None, fee = 3000):
POOL_INIT_CODE_HASH = '0xe34f199b19b2b4f47f68442619d555527d244f78a3297ea89325f843f87b8b54'
token_0 = Web3.toChecksumAddress(token_0)
token_1 = Web3.toChecksumAddress(token_1)
abiEncoded_1 = encode_abi(['address', 'address', 'uint24'], (token_0, token_1, fee )) if int(token_0,16)<int(token_1,16) else encode_abi(['address', 'address', 'uint24'], (token_1, token_0, fee ))
salt = Web3.solidityKeccak(['bytes'], ['0x' +abiEncoded_1.hex()])
abiEncoded_2 = encode_abi_packed([ 'address', 'bytes32'], ( factory, salt))
resPair = Web3.solidityKeccak(['bytes','bytes'], ['0xff' + abiEncoded_2.hex(), POOL_INIT_CODE_HASH])[12:]
return(resPair.hex())
Testing it, based on 4 and 5
factoryAddress = '0x1111111111111111111111111111111111111111'
token0 = '0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48'
token1 = '0x6B175474E89094C44Da98b954EedeAC495271d0F'
fee = 500 #https://docs.uniswap.org/sdk/reference/enums/FeeAmount#low
targetPoolAddress = '0x90B1b09A9715CaDbFD9331b3A7652B24BfBEfD32'
assert(targetPoolAddress.lower() == compute_pairs_address_with_target_v3(factory = factoryAddress, token_0 = token0, token_1 = token1, fee = fee).lower())
token0 = '0x7d1afa7b718fb893db30a3abc0cfc608aacfebb0'
token1 = '0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2'
factoryAddress = '0x1F98431c8aD98523631AE4a59f267346ea31F984'
fee = 3000 #https://docs.uniswap.org/sdk/reference/enums/FeeAmount#medium
targetPoolAddress = '0x290a6a7460b308ee3f19023d2d00de604bcf5b42' #WETH /MATIC 0.3 % fee
assert(targetPoolAddress.lower() == compute_pairs_address_with_target_v3(factory = factoryAddress, token_0 = token0, token_1 = token1, fee = fee).lower())
Related
How can I change the take profit or stop loss of an order already created via ccxt python in Binance futures?
I would like an already created order to be able to change the stop loss, as if I did it from the binance web cli, there is some way, I create my order like this
exchange.create_order(symbol=par, type='limit', side=side, price = precio, amount= monto, params={})
When detecting a certain pattern I would like to update the SL and TP, it's possible?
I have not found information in the ccxt wiki
There is an edit_order function that you may want to try.
import ccxt
exchange = ccxt.binanceusdm()
exchange.apiKey = 'YOUR_API_KEY'
exchange.secret = 'YOUR_API_SECRET'
symbol = 'BTC/USDT'
order_id = 'ORDER_ID'
order_type = 'limit'
side = 'buy'
amount = 0.001
price = 16000
stop_loss = 15000
take_profit = 17000
exchange.edit_order(order_id, symbol, order_type, side, amount, price, {'stopLossPrice': stop_loss, 'takeProfitPrice': take_profit})
This question is quite related to Compute uniswap pair address via python
I am trying to do the same but for panckage swap v2.
I am using the CAKE/WBNB pair as an example:
CONTRACTS = {
"CAKE": "0x0E09FaBB73Bd3Ade0a17ECC321fD13a19e81cE82",
}
PANCAKE_SWAP_FACTORY = "0xcA143Ce32Fe78f1f7019d7d551a6402fC5350c73"
PANCAKE_SWAP_ROUTER = "0x10ED43C718714eb63d5aA57B78B54704E256024E"
WBNB_ADDRESS = "0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c"
hexadem_ ='0x00fb7f630766e6a796048ea87d01acd3068e8ff67d078148a3fa3f4a84f69bd5'
factory = PANCAKE_SWAP_FACTORY
abiEncoded_1 = encode_abi_packed(['address', 'address'], (CONTRACTS['CAKE'], WBNB_ADDRESS))
salt_ = pancakeswap.w3.solidityKeccak(['bytes'], ['0x' +abiEncoded_1.hex()])
abiEncoded_2 = encode_abi_packed([ 'address', 'bytes32'], ( factory, salt_))
resPair = pancakeswap.w3.solidityKeccak(['bytes','bytes'], ['0xff' + abiEncoded_2.hex(), hexadem_])[12:]
# resPair is the address for the pancakeswap CAKE/WBNB pair
print(resPair.hex())
print('0xA527a61703D82139F8a06Bc30097cC9CAA2df5A6')
print(resPair.hex() == '0xA527a61703D82139F8a06Bc30097cC9CAA2df5A6')
print()
My first problem is the code is not working, it is not producint the correct contract address, in fact it prints:
0x0ed7e52944161450477ee417de9cd3a859b14fd0
0xA527a61703D82139F8a06Bc30097cC9CAA2df5A6
False
I think the problem is the value of the constant hexadem_, which can be found in:
hexadem_ = '0xd0d4c4cd0848c93cb4fd1f498d7013ee6bfb25783ea21593d5834f5d250ece66' # from https://github.com/pancakeswap/pancake-swap-periphery/blob/master/contracts/libraries/PancakeLibrary.sol
hexadem_ ='0x96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' # from uniswap (most likely wrong...)
hexadem_ ='0x00fb7f630766e6a796048ea87d01acd3068e8ff67d078148a3fa3f4a84f69bd5' # from https://bscscan.com/address/0x10ED43C718714eb63d5aA57B78B54704E256024E#code line 298
The address you obtained is correct. The address that you are attempting to match to is for pancake V1.
You can see this by clicking on "contract creator" for the 2 addresses, and you will see the pancake factory versions for 0x0ed7e52944161450477ee417de9cd3a859b14fd0 and 0xA527a61703D82139F8a06Bc30097cC9CAA2df5A6.
I am having some issues with some code. I have set about a project for creating Bitcoin wallets in an attempt to turn a hobby into a learning experience, whereby I can understand both Python and the Bitcoin protocol in more detail. I have posted here rather than in the Bitcoin site as the question is related to Python programming.
Below I have some code which I have created to turn a private key into a WIF key. I have written this out for clarity rather than the most optimal method of coding, so that I can see all the steps clearly and work on issues. This code was previously a series lines which I have now progressed into a class with functions.
I am following the example from this page: https://en.bitcoin.it/wiki/Wallet_import_format
Here is my current code:
import hashlib
import codecs
class wif():
def private_to_wif(private_key):
extended_key = wif.create_extended(private_key)
address = wif.create_wif_address(extended_key)
return address
def create_extended(private_key):
private_key1 = bytes.fromhex(private_key)
private_key2 = codecs.encode(private_key1, 'hex')
mainnet = b'80'
#testnet = b'ef'
#compressed = b'01'
extended_key = mainnet + private_key2
return extended_key
def create_wif_address(extended_key):
first_hash = hashlib.sha256(extended_key)
first_digest = first_hash.digest()
second_hash = hashlib.sha256(first_digest)
second_digest = second_hash.digest()
second_digest_hex = codecs.encode(second_digest, 'hex')
checksum = second_digest_hex[:8]
extended_key_chksm = (extended_key + checksum).decode('utf-8')
wif_address = base58(extended_key_chksm)
return wif_address
def base58(extended_key_chksm):
alphabet = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
b58_string = ''
leading_zeros = len(extended_key_chksm) - len(extended_key_chksm.lstrip('0'))
address_int = int(extended_key_chksm, 16)
while address_int > 0:
digit = address_int % 58
digit_char = alphabet[digit]
b58_string = digit_char + b58_string
address_int //= 58
ones = leading_zeros // 2
for one in range(ones):
b58_string = '1' + b58_string
return b58_string
I then use a few lines of code to get this working, using the example private key from the above guide, as follows:
key = ‘0C28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1D‘
address = wif.private_to_wif(key)
Print(address)
I should be getting the output: 5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbTLvyTJ
Instead I’m getting:
5HueCGU8rMjxEXxiPuD5BDku4MkFqeZyd4dZ1jvhTVqvbWs6eYX
It’s only the last 6 characters that differ!
Any suggestions and help would be greatly appreciated.
Thank you in advance.
Connor
I have managed to find the solution by adding a missing encoding step.
I am posting for all those who run into a similar issue and can see the steps that brought resolution.
def create_wif_address(extended_key):
extended_key_dec = codecs.decode(extended_key, 'hex')
first_hash = hashlib.sha256(extended_key_dec)
first_digest = first_hash.digest()
second_hash = hashlib.sha256(first_digest)
second_digest = second_hash.digest()
second_digest_hex = codecs.encode(second_digest, 'hex')
checksum = second_digest_hex[:8]
extended_key_chksm = (extended_key + checksum).decode('utf-8')
wif_address = base58(extended_key_chksm)
return wif_address
So above I added in a step to the function, at the beginning, to decode the passed in variable from a hexadecimal byte string to raw bytes, which is what the hashing algorithms require it seems, and this produced the result I was hoping to achieve.
Connor
I want to generate auto generate book fine of 10% of book cost. I have written the following code but nothing happens. No error comes and not working. book_cost field is in book module.
Please check code.
issue_date = fields.Date('Issue Date', required=True, tracking=True)
due_date = fields.Date('Due Date', required=True, tracking=True)
book_ids = fields.Many2many('odooschool.library.books','tch_book_rel','book_name','teacher_id','Issued Books')
sequence = fields.Integer('sequence')
fine_amount = fields.Char('Fine Amount', compute='_get_cost_details')
submission_date = fields.Date.today()
price = fields.Char('Price')
#api.depends('due_date','book_ids.book_cost')
def _get_cost_details(self):
market_multiplier = 0
date_return = fields.Date()
for rec in self:
fine_amount = 0
if rec.due_date and rec.submission_date and rec.due_date > rec.submission_date:
date_return = (rec.due_date - rec.submission_date)
market_multiplier = int(decimal.Decimal('0.10'))
fine_amount = rec.book_ids.book_cost * market_multiplier
rec.fine_amount += rec.fine_amount
I think if you replace
submission_date = fields.Date.today()
by
submission_date = fields.Date(default= fields.Date.today)
That will be work. Cause the submission_date in your code is always the starting date of Odoo server.
Regards
I'm not sure if the title accurately describes what I'm trying to do. I have a Python3.x script that I wrote that will issue flood warning to my facebook page when the river near my home has reached it's lowest flood stage. Right now the script works, however it only reports data from one measuring station. I would like to be able to process the data from all of the stations in my county (total of 5), so I was thinking that maybe a class method may do the trick but I'm not sure how to implement it. I've been teaching myself Python since January and feel pretty comfortable with the language for the most part, and while I have a good idea of how to build a class object I'm not sure how my flow chart should look. Here is the code now:
#!/usr/bin/env python3
'''
Facebook Flood Warning Alert System - this script will post a notification to
to Facebook whenever the Sabine River # Hawkins reaches flood stage (22.3')
'''
import requests
import facebook
from lxml import html
graph = facebook.GraphAPI(access_token='My_Access_Token')
river_url = 'http://water.weather.gov/ahps2/river.php?wfo=SHV&wfoid=18715&riverid=203413&pt%5B%5D=147710&allpoints=143204%2C147710%2C141425%2C144668%2C141750%2C141658%2C141942%2C143491%2C144810%2C143165%2C145368&data%5B%5D=obs'
ref_url = 'http://water.weather.gov/ahps2/river.php?wfo=SHV&wfoid=18715&riverid=203413&pt%5B%5D=147710&allpoints=143204%2C147710%2C141425%2C144668%2C141750%2C141658%2C141942%2C143491%2C144810%2C143165%2C145368&data%5B%5D=all'
def checkflood():
r = requests.get(river_url)
tree = html.fromstring(r.content)
stage = ''.join(tree.xpath('//div[#class="stage_stage_flow"]//text()'))
warn = ''.join(tree.xpath('//div[#class="current_warns_statmnts_ads"]/text()'))
stage_l = stage.split()
level = float(stage_l[2])
#check if we're at flood level
if level < 22.5:
pass
elif level == 37:
major_diff = level - 23.0
major_r = ('The Sabine River near Hawkins, Tx has reached [Major Flood Stage]: #', stage_l[2], 'Ft. ', str(round(major_diff, 2)), ' Ft. \n Please click the link for more information.\n\n Current Warnings and Alerts:\n ', warn)
major_p = ''.join(major_r)
graph.put_object(parent_object='me', connection_name='feed', message = major_p, link = ref_url)
<--snip-->
checkflood()
Each station has different 5 different catagories for flood stage: Action, Flood, Moderate, Major, each different depths per station. So for Sabine river in Hawkins it will be Action - 22', Flood - 24', Moderate - 28', Major - 32'. For the other statinos those depths are different. So I know that I'll have to start out with something like:
class River:
def __init__(self, id, stage):
self.id = id #station ID
self.stage = stage #river level'
#staticmethod
def check_flood(stage):
if stage < 22.5:
pass
elif stage.....
but from there I'm not sure what to do. Where should it be added in(to?) the code, should I write a class to handle the Facebook postings as well, is this even something that needs a class method to handle, is there any way to clean this up for efficiency? I'm not looking for anyone to write this up for me, but some tips and pointers would sure be helpful. Thanks everyone!
EDIT Here is what I figured out and is working:
class River:
name = ""
stage = ""
action = ""
flood = ""
mod = ""
major = ""
warn = ""
def checkflood(self):
if float(self.stage) < float(self.action):
pass
elif float(self.stage) >= float(self.major):
<--snip-->
mineola = River()
mineola.name = stations[0]
mineola.stage = stages[0]
mineola.action = "13.5"
mineola.flood = "14.0"
mineola.mod = "18.0"
mineola.major = "21.0"
mineola.alert = warn[0]
hawkins = River()
hawkins.name = stations[1]
hawkins.stage = stages[1]
hawkins.action = "22.5"
hawkins.flood = "23.0"
hawkins.mod = "32.0"
hawkins.major = "37.0"
hawkins.alert = warn[1]
<--snip-->
So from here I'm tring to stick all the individual river blocks into one block. What I have tried so far is this:
class River:
... name = ""
... stage = ""
... def testcheck(self):
... return self.name, self.stage
...
>>> for n in range(num_river):
... stations[n] = River()
... stations[n].name = stations[n]
... stations[n].stage = stages[n]
...
>>> for n in range(num_river):
... stations[n].testcheck()
...
<__main__.River object at 0x7fbea469bc50> 4.13
<__main__.River object at 0x7fbea46b4748> 20.76
<__main__.River object at 0x7fbea46b4320> 22.13
<__main__.River object at 0x7fbea46b4898> 16.08
So this doesn't give me the printed results that I was expecting. How can I return the string instead of the object? Will I be able to define the Class variables in this manner or will I have to list them out individually? Thanks again!
After reading many, many, many articles and tutorials on class objects I was able to come up with a solution for creating the objects using list elements.
class River():
def __init__(self, river, stage, flood, action):
self.river = river
self.stage = stage
self.action = action
self.flood = flood
self.action = action
def alerts(self):
if float(self.stage < self.flood):
#alert = "The %s is below Flood Stage (%sFt) # %s Ft. \n" % (self.river, self.flood, self.stage)
pass
elif float(self.stage > self.flood):
alert = "The %s has reached Flood Stage(%sFt) # %sFt. Warnings: %s \n" % (self.river, self.flood, self.stage, self.action)
return alert
'''this is the function that I was trying to create
to build the class objects automagically'''
def riverlist():
river_list = []
for n in range(len(rivers)):
station = River(river[n], stages[n], floods[n], warns[n])
river_list.append(station)
return river_list
if __name__ == '__main__':
for x in riverlist():
print(x.alerts())