Here is an article on how to call the “Executăsel” function in the Uniswap V3 using Web3.Py:
Title: How to call the sales function made in the Uniswap V3 with Web3.py
Entry:
UNISWAP V3 is a popular decentralized exchange protocol (DEX), which enables peers between assets. When you call “buy” and “sell on Uniswap V3, it performs two separate transactions: one to buy assets and the other to sell the same ingredient back into the liquidity pool. In this article, we will show you how to use Web3.Py to call the “Executăsel” function in Uniswap V3.
Place:
- You installed Web3.Py in the car.
- You have a Uniswap V3 wallet and Ethereum node (such as gnosis or infura).
- You created a contract for your token (e.g. with truffles or remix).
Step 1: Define the “executăsel” function
First of all, you need to define the “Perform” function in the UNISWAP V3 contract. This function is called when the resource is sold back to the liquidity pool.
`Python
Def executesell (web3, chain, wallet_address, address_taken, token_abi):
Get the current price of assets
tx_hash = web3.eth.sendrawtranstion (
{
"Data": transaction_to_sign,
"Gaseprice": web3.towei ('20, "gwei"),
"LA": address_taken,
"Value": web3.towei (0, "ether")
}
)
Get a transaction shortcut
tx_hash = tx_hash.hex ()
Call the "executăsel" function in the contract (in this case to show its name)
tx_hash = web3.etth.gettransactioncount (wallet_address) .hex ()
Replace with the real portfolio address
Returns tx_hash
Step 2: Get a contract court
Then you need to get the Instance of the UNISWAP V3 contract. You can do this by causing the web3.etth.contract.
Python
Contract = web3.etth.contract (address = '0xyoucontraraDDress', abi = token_abi)
Step 3: Call the “executăsel” function
Now you need to call the “Perform” function in your contract court. You can do this using the “web3.etth.sendranstion method.
`Python
tx_hash = executesell (web3, chain, wallet_atelski, address_taken, token_abi)
Step 4: Error service
Error manipulation is crucial when calling for external contracts. Make sure you manage all potential errors that may occur when performing the “Execurta” function.
`Python
to try:
tx_hash = executesell (web3, chain, wallet_atelski, address_taken, token_abi)
Except for web3.httpexception, as is:
Printing (f "http error: {e}")
folding everything
Here is the full code:
“ Python
Import web3
Def Sell_TOKEN (web3: web3, chain, portfolio Porten_address, address_taken, token_abi, transactions_to_sign):
Get the current price of assets
tx_hash = web3.eth.sendrawtranstion (
{
“Data”: transactions_to_sign,
“Gaseprice”: web3.towei (’20, “gwei”),
“LA”: address_taken,
“Value”: web3.towei (0, “ether”)
}
)
Get a transaction shortcut
tx_hash = tx_hash.hex ()
Call the “executăsel” function in the contract (in this case to show its name)
tx_hash = web3.etth.gettransactioncount (wallet_address) .hex ()
Replace with the real portfolio address
Returns tx_hash
Def main ():
Create a new instance web33
Web3.web3 ()
Define the contract and ABI
Contract = web3.et.