Web3 py uniswap Problem is I am getting the following error: web3. Further, the amounts should be converted from the human-readable format to internal representation (wei for ETH, decimal units for other tokens). py; uniswap; or ask your own question. PancakeSwap Contract / Swaping token for another token. py library. I'm trying to use the getAmountOut() function from the Uniswap Router-02 which should tell you how much of output token you should receive for a given input token amount. However, when I look at that transaction on etherscan, it appears as though it is actually for a Uniswap MKR contract with the function signature of web3. Initialize the smart contract & account to sign the transactions from. functi You signed in with another tab or window. functions "not found" in Web3. py and upon calling the function, it is giving me a ContractLogic Error: execution reverted which occurs on both getAmountOutMin as wel ERC-20 token transfer with web3. You switched accounts on another tab or window. eth OP is using web3. I am unable to do a simple swap, a little help here will be very appreciated : from web3 import Web3 # Binance Smart Chain Testnet node endpoint (e. This value may not contain the keys data or to. Your data which you use for the abi appears to be from an ERC-20 contract. Using web3py with truffle framework. Uniswap ETH to Tokens to ETH swap function For interacting with the Uniswap V3 smart contract protocols using web3. asked Oct 23, 2024 at 11:25. It is assumed that you know the basics about Ethereum and the blockchain, including some terminology. Add a comment | 3 Answers Sorted by: Reset to default 4 . If not already done, it is Mastering Token Sales with Uniswap’s Universal Router: A Python Deep Dive. For this particular example, we use PancakeSwap on Binance Smart Chain, but you can reconfigure the script for any Uniswap v2 compatible Examples of how to use web3. Filter mempool for Uniswap or Pancake Swap transactions with Python. Encoding arguments for UniswapV3 trade function. Exolith Exolith. accounts[0] and I can retrieve my contract. V3 folder contains Listener and Caller for listening to events and calling functions of Uniswap V3. Visit Stack Exchange. Here is the Web3 Python Code: web3. Permit is a little involved, there are two ways you can do it. py swapExactTokensForTokens failing transaction. I was able to get info about the position by calling : contract = web3. because adding liquidity will generate an event of increased liquidity you can catch it via emission of the event. Web3-Ethereum-DeFi Python API documentation. toChecksumAddress()in Web3. Okay, self own. py contract "Function invocation failed due to no matching argument types. This is an example code for showing live swaps happening on Uniswap v2 compatible exchanges. The Overflow Blog Robots building robots in a robotic factory “Data is the key”: Twilio’s Head of R&D on the need for good data. eth. Generate route web3 = create_multi_provider_web3(json_rpc_url) # Get Pool contract ABI file, prepackaged in eth_defi Python package # and convert it to a wrapped Python object You signed in with another tab or window. Visit Stack Exchange uniswap; web3. Skip to content. Token swap not working on uniswap v2. Construct and deploy a contract by sending a new public transaction. You can use Tenderly. py query for Uniswap V3 Factory contract events on Arbitrum, getting all pools created since block 0, but it's missing multiple token pairs I'm using web3. Improve this answer . The Python code below uses Web3. Uniswap Universal Router SDK The target audience is Python developers who are familiar with the Ethereum blockchain concepts and web3. In addition, When you use web3. web3py Once we know how it works, it's easy to do a swap using Web3. Any suggestion? Thanks ahead！ TDLR: the same code that works with UniSwap is capable of returning an infinite "amountOut" when querying PancakeSwap router function "getAmountsOut". Calling Smart Contract function from . OP is using web3. Since then, it has grown and evolved in ways I never imagined. 6k 58 58 gold badges 287 287 silver badges 467 467 bronze badges. Web3. py: ValueError: Could not format value when trying to deploy smart contract bytecode from Truffle. Navigation Menu Toggle navigation. get_new_entries Retrieve new entries for this filter. py; uniswapv3; or ask your own question. In the dynamic world of decentralized finance (DeFi), efficient token swapping is crucial. getAmountsOut’ is a function in the contract that gets the number of Uniswap arbitrage problem analysis. swapExactTokensForTokens transaction has different ratio than router interface transaction. 25 4 4 CoinMarketCap/Uniswap API would be a good start. The Overflow Blog Robots building robots in a robotic factory. py from GitHub repo is Python3. 43 2 2 silver badges 7 7 bronze badges. Skip to main content. py can check LP Pool Address directly of any given Token Address or ERC-20 token transfer with web3. Hayden Adams. The following examples only show the syntax and the logic; go to the Full scripts section to find complete scripts that call real smart contract Uniswap v2 reading real-time swaps and new pairs . the answer to this is always make sure you are using the right token addresses. py in Python. filters. Expected pair contract {context. Ask Question Asked 3 years, 10 months ago. positions(nft_token_id). py to interact with smart contracts, you can divide the script into three parts:. Web-Ethereum-DeFi (eth_defi) Python package provides high level modules for smart contracts, with prepackaged ABI files for DeFi protocol integration, wallet management, JSON-RPC providers and automated test suites. Follow edited Oct 23, 2024 at 11:27. How to put liquidity in uniswap liquidity pool using python-uniswap or web3? 0. Jun 25, 2024. filter_id The filter_id for this filter as returned by the eth_newFilter RPC method when this filter was created. I've been trying all day to get a gas estimate for a transaction with web3. 1. 3. Uniswap v3 DEX API . py, and how DEXes work. I wanted to know if web3. Hot Network Questions John 3:5 is it "of the Spirit" or "of spirit"? Why BIT and not BOOLEAN? web3. contract(address=addr_uni_nft_pos,abi=abi_uni_pos) contract. #Company. , Infura) bsc_testnet_node_url = "https: We also show that Uniswap satisfies many other desirable properties and numerically demonstrate, via a large-scale agent-based simulation, that Uniswap is stable under a wide range of market conditions. Valid formats for this environment variable I've made a python web3 script that swaps ETH to Token using exactInputSingle function on Uniswap v3 Abritrum chain. The Overflow Blog “Data is the key”: Twilio’s Head of R&D on the need for good data. middleware import geth_poa_middleware def getWeb3Matic(): w3 = Web3(Web3. It’s supported $1. The Overflow Blog From bugs to performance to perfection: pushing code quality in mobile apps “You don’t want to be that person”: What security teams need to understand Featured on Meta We’re (finally!) going to the cloud! Updates to the 2024 Q4 Community Asks Sprint. Uniswap v2 compatible DEXes include. assert log["address"] == context. py to call the PancakeSwap's router contract's getAmountsOut function, and every time I increase the "amountIn" field by 1000 units, I get an amountOut that shows no sign of approaching a Here is an example code that calculates Uniswap pair contract price in few ways using web3-ethereum-defi library. Code Issues Pull requests Discussions 🥞 A Python client for accessing PancakeSwap Lottery smart contract information through Web3. I'm trying to learn more about dapps by using Python's web3 module. py library is a good starting point. classmethod Contract. Add a comment | Sorted by: Reset to default Each Contract Factory exposes the following methods. py; Uniswap v3 liquidity analysis; Uniswap v3 OHCLV candle price analysis; Uniswap v3 historical price estimation; Uniswap v2 historical swaps and pairs event reading; Uniswap v2 reading swaps real-time (minimal) Uniswap v2 reading real-time swaps and new pairs Failed token purchase transactions on uniswap with web3. py and Web-Ethereum-Defi library. Uniswap v2 trading pair info. Gets the price entries using Uniswap v2 web3. I am using Python and web3. Is there some Uniswap v2 reading real-time swaps and new pairs . – VX3. com/watch?v=-4yAIRualxM*****LinkedIn : https://www. py. how to call execute sell function in uniswap v3? I have called function buy and sell with uniswap v3 and transaction is failed. I don't think price1CumulativeLast needs to be involved. Uniswap v2 reading real-time swaps and new pairs . In this example we use QuickSwap (Polygon) because Polygon provides good free RPC nodes. Add web3-ethereum-defi as a development dependency: Using Poetry: # Data optional dependencies include pandas and gql, needed to fetch Uniswap v3 data poetry add-D "web3-ethereum-defi[data]" Documentation. pylibrary is a good starting point. Commented Jan 31, 2023 at 5:41. If you already know how to build dApps and interact with ethersJS etc. Robots building robots in a robotic factory. If provided transaction should be a dictionary conforming to the web3. Add liquidity to Uniswap pool with Web3. Sponsor Star 208. log("account: ", this. It works on any Uniswap v2 compatible DEX. Web3 connects to Ganache just fine, I can see my account by using web3. py to parse through all liquidity pools created since block 0 on Uniswap V3 Arbitrum. This example runs on a free Polygon JSON-RPC node. Filter (web3, filter_id) Filter. utils. However when I try to call a function from my contract I get the following: You signed in with another tab or window. Prerequisites. Once you have reviewed the relevant documentation for the provider of your choice, you are ready to get started with web3. Most APIs have inline code examples for functions and classes I want to get token prices for uniswap and sushiswap exchange by using web. Contribute to yu-jeffy/PyArb development by creating an account on GitHub. py; sepolia; revert; Share. py; Uniswap v3 liquidity analysis; Uniswap v3 OHCLV candle price analysis; Uniswap v3 historical price estimation; Uniswap v2 historical swaps and pairs event reading; Uniswap v2 reading swaps real-time (minimal) Uniswap v2 reading real-time swaps and new pairs I think you are confusing events and transactions. This is to check if it is a scam coin. ander torregrosa ander torregrosa. The mempool is also known as the transaction pool and or the txpool. py from pip. Provider via Environment Variable Alternatively, you can set the environment variable WEB3_PROVIDER_URI before starting your script, and web3 will look for that provider first. Essentially I am trying to use a token swap function for web3. py in Python; Get market You can now find here several examples of how to listen to Uniswap events, both real-time and past, Uniswap v2 and Uniswap v3. Written by. Improve this question. lower(), f"Got wrong source address for Sync event. web3-ethereum-defi Python package comes with 100% API documentation coverage. Testing uniswapV2 swap function with hardhat. py; uniswap; fees; staking; or ask your own question. py for basic examples. This approval needs to be performed in a preceding transaction (unless as part of an atomic call from a custom contract for example). transact(transaction=None) . Star 42. eth Main function main. An event is a set of data emited by a transaction once it is mined, and only if the tx has been developped to do so. Add a comment | Sorted by: Reset to default You signed in with another tab or window. Uniswap arbitrage problem analysis. - uniswap-python/uniswap-python from this code How to add Web3. Uniswap v3 Subgraph Returning Empty Array for TokenHourDatas. Uniswap Universal Router SDK - Decode and Encode Transactions - Elnaril/uniswap-universal-router-decoder. py; decentralized-exchange; api; Share. It is working but the second time i try to buy the token i run into this weird error: web3. Topics. Use cases; Prerequisites; Install 文章浏览阅读647次。接着，我们加载了Uniswap V3池合约ABI和Uniswap V3 Multicall合约ABI。然后，我们为要查询的Uniswap V3池地址创建了一个列表，并为每个池准备了调用数据。在这个示例中，我们首先设置了一个连接到以太坊网络的提供商。这里我们使用了Infura，但您可以使用任何其他支持的提供商。 Blockchain using python #1 (Intro to web3. Oct 12, 2024. 2. The example code. Eth. It does some calculations around slippage and price impact analysis. py - Unable to import 'web3' even though web3 is installed I have a program where i buy a token, then sell it and then buy it again, if it was possible to sell. Fireblocks DeFi Python SDK. A transaction is well, a transaction, not an event. How to get Sushiswap and Uniswap prices from API for WETH/DAI on KOVAN? 1. app, the LP Pool Address can be checked based on the pair (TOKEN/BNB LP Holdings). 1 answer. We know the block number when the trade decision was made (time and block number at the time when the price impact was estimated) We’re using the Web3. The PairDetails class will do an automatic conversion of prices to human-readable, decimal format: It was a swap to sell a token using Uniswap. The PairDetails class will do an automatic conversion of prices to human-readable, decimal format: The snippet below checks for the latest added Liquidity Pool of a token. After sending ether - 0 (pass 0 - if you are not swapping eth for token) as a value, the contract method succeeded the transaction. This is the Python example code for Uniswap v2 compatible DEX swap live monitoring. The package aims for robustness, high quality of the code and documentation. Bringing Web3 to Everyone. py) - https://www. hash_store_contract. web3. The Overflow Blog The developer skill you might be neglecting. So to anyone else starting out. py; or ask your own question. This is correct for the maker_token_address. This. What you are writing does not make sense with Python and looks like JavaScript and Web3. py uniswap is status :0 with swapExactTokensForTokens. Modified 3 years, 1 month ago. Now that we have the information we need, let’s put them together in a python file that we call buy_token. functions. py; Uniswap v3 liquidity analysis; Uniswap v3 OHCLV candle price uniswap; web3. 91 2 2 silver badges 7 7 bronze badges. I have tried to use amountin and amountout from getAmountsOut function but it is same. 83. g. Uniswap, Aave and Defi Python APIs. co to debug your transaction by hash – Mikko Ohtamaa. October 13, 2022. Follow answered Jul 7, 2022 at 23:21. ander torregrosa. Reload to refresh your session. py; Uniswap v3 liquidity analysis; Uniswap v3 OHCLV candle price analysis; Uniswap v3 historical price estimation; Uniswap v2 historical swaps and pairs event reading; Uniswap v2 reading swaps real-time (minimal) Uniswap v2 reading real-time swaps and new pairs; PancakeSwap follow live trades programmatically I've been testing swap function with python web3. state. This is the relevant part of the code I believe: # Estimate gas gas_estimate = self. get_filter_changes() which returns only new entries since the last poll. Related. asked Sep 1, 2023 at 15:51. web3py EthereumTesterProvider not working. For this particular example, we use PancakeSwap on Binance Smart Chain, but you can reconfigure the script for any Uniswap v2 compatible protocol on any EVM-compatible blockchain. get_transaction_receipt" function to get the transaction details, but I couldn't find how get the exact amount of tokens that went into my wallet. Lets use Web3. Uniswap web3 py buy token fails with execution reverted. py in Python; Get gas prices from the ETH Gas Station using json in Python; Call a uniswap function using Web3. Documentation for eth_defi. PairDetails Python class. Share. py; uniswap; abi; or ask your own question. Sign in Product Actions. We’ll start by importing the libraries as follow: from uniswap_universal_router_decoder import FunctionRecipient, RouterCodec from web3 import Account, Web3 “RouterCodec” is the class used to encode and decode the data sent to In this tutorial we will query the Ethereum mempool using Web3. EIP 1559 transaction for and swapExactTokensForTokens (Web3. The Overflow Blog From bugs to performance to perfection: pushing code quality in mobile apps “You don’t want to be that person”: What security teams need to Web3 Development Basics guide should help you identify areas that you might need to learn a bit more about and prepare you for the following Uniswap-specific guides. I have to swap eth to tokens using swapExactEthforTokens in Uniswap. I have to call static to avoid gas cost. py tutorials and basics before trying to tackle more complex problems, because this knowledge is prerequisite for you to program anything useful. You signed out in another tab or window. The function swapExactTokensForTokens (and similar functions) expect all parameters passed as integers. Connect to the network. I'm trying to get the amount of each token currently held in a liquidity pool position on Uniswap V3 (in Pyhton) based on the token ID of the NFT. We’ll start by importing the libraries as follow: from uniswap_universal_router_decoder import FunctionRecipient, In this tutorial we will query the Ethereum mempool using Web3. py and Gradio to Build an Ethereum Dashboard. from eth_defi. Call functions and transactions. Mikko Ohtamaa Mikko Ohtamaa. Kurt. In poocoin. I faced same issue before, In my self exactInputSingle method expects ether, I didn't passed ether to the exactInputSingle method. This is an example code for showing live swaps happening on Uniswap v2 compatible examples. """Live Uniswap v2 swap event monitor with chain reorganisation detection. py; Uniswap v3 liquidity analysis; Uniswap v3 OHCLV candle price Contribute to Beriya73/Websocket_Uniswap development by creating an account on GitHub. PairDetails . py with BuildBear RPC to test, deploy, and manage dApps Python library for Uniswap V3 For interacting with the Uniswap V3 smart contract protocols using web3. My JavaScript code is as follows: (async => { console. Uniswap transaction fails with TransferHelper: TRANSFER_FROM_FAILED. An example usage how to get the latest price of a pair on PancakeSwap. Below is an example Python script that analyses the historical Uniswap v3 trade. - uniswap-python/uniswap/uniswap. API documentation . 🦄 The unofficial Python client for the Uniswap exchange. Today, we’ll explore a Python script that leverages Uniswap’s Universal Router to sell tokens on Uniswap or How to Use Web3. Follow edited Sep 3, 2023 at 17:07. Pancakeswap Transaction failed message python. Failed token purchase transactions on uniswap with web3. Performing ERC-20 token transfers. py Most DEX are just forks of the great Uniswap v2, so to query prices and make swap we need to learn how Uniswap v2 works and which method are available on their smart contracts. In this example we use QuickSwap (Polygon) because Polygon provides good free RPC nodes which makes running the example code easy. 41 1 1 silver badge 3 3 bronze badges. 2 trillion in trading 🦄 The unofficial Python client for the Uniswap exchange. py) 0. Issue plugging two arrays (first time passing multiple args) into a web3. I am trying to add liquidity to Uniswap on the Ropsten network using Web3. token import create_token, TokenDetails, fetch_erc20_details, reset_default_token_cache Once we know how it works, it's easy to do a swap using Web3. Updated Nov 11, 2024; Python; carver / ethtoken. py; Uniswap v3 liquidity analysis; Uniswap v3 OHCLV candle price ERC-20 token transfer with web3. py; Uniswap v3 liquidity analysis; Uniswap v3 OHCLV candle price You signed in with another tab or window. Yugenswitch Yugenswitch. Twiddles Twiddles. py library to interact with the Binance Smart Chain (BSC). As an example, here we download raw events from first few blocks after Uniswap V3 was deployed. constructor (*args, **kwargs). By Hayden Adams. account); const deployedContract = await new web3. Hot Network Questions Mastering the inner game of bullying/harrassment What do "messy" weapons do, exactly? Why is Jesus called Prince of Peace and not King of Peace considering he was also called Eternal Father? Why does Trump want to raise/cancel the debt ceiling if DOGE will save Bringing Web3 to Everyone. - This example runs on free Polygon JSON-RPC nodes, you do not need any self-hosted or commercial node Expected behavior We should be able to import Uniswap with the latest version of web3. Encoding ABI function signature I was trying to get the price of various crypto coins using web3. The example displays BNB/BUSD price It works on any Uniswap v2 compatible DEX. On Uniswap v2, this can be easily be solved by using swapExactTokensForETH, but I'm using web3py to swap tokens, using the "swapExactETHForTokens" function, it's working perfectly, with the return hash I use the "web3. Examples include. HTTPProvider('htt Below is an example script that displays the real-time price of Uniswap v2 compatible trading pair in a terminal. py; Uniswap v3 liquidity analysis; Uniswap v3 OHCLV candle price Web3-Ethereum-Defi. Additionally, I found a python library to interact with uniswap named python-uniswap, it has some methods related to liquidity pools but as it doesn't have a complete example, I get confused and don't know how to use that. uniswap_v2. You signed in with another tab or window. Stack Exchange Network. How to Flash-Swap on UniswapV3. Minting new position on Uniswap V3 using hardhat. I'm doing this at BSC Testnet, but you can easily adapt this to Ethereum by just changing addresses Web3-Ethereum-DeFi Python API documentation. In addition, This code uses the’getAmountsOut ‘function in the Uniswap V2 Router 2 contract to calculate the number of # Uniswap V2 uniswapv2_router2_contract = web3. 31 2 2 bronze badges. The script is set up Permit. Find and fix Filter Class class web3. Elnaril / uniswap-universal-router-decoder. Filter. I suggest you start with Web3. linkedi web3. UniswapV3: Quoter functions quoteExactInput & quoteExactOutput works not as expected. py; arbitrum; Share. " 1. Contribute to fireblocks/fireblocks-defi-sdk-py development by creating an account on GitHub. Check out main. This repository shows some example codes on how to do various defi/crypto related things in Python. The dotenv library is used to load environment variables, which is a good practice for keeping sensitive I'm able to do swap transactions using multicall and exactInputSingle functions on both Uniswap v3 and Pancakeswap v3. - ‘functions. Authors: Guillermo Angeris, Tarun Chitra Uniswap Labs announces $165M Series B! Blog. py to interact with a Uniswap V2 pair contract: from web3 import Web3 from eth_utils import to_checksum_address # Initialize To interact with smart contracts, we need a Web3 library, for Python the Web3. But it is having only status : 0 on receipt. Uniswap V2 Swap Directly Through Router Contract Not Working. To my knowledge, this information can likely be found by extracting the function calls with its parameters inside the 'input' field of the transaction object returned by web3 py library. py at master · uniswap-python/uniswap-python Here are some library functions Python and Uniswap v2 for working with DeFi. Contract. I found this other topic answered with the same question, but I didn't understand the ERC-20 token transfer with web3. Automate any workflow Packages. This tutorial is intended for developers who are comfortable with Python, the basics of Ethereum (contracts, ERC20, transactions, gas, etc. py; uniswap; Share. 613 views. call() from which I'm getting: uniswap; web3. . V3 folder contains Listener and Caller for listening to events and calling functions of Read Solidity smart contract data using Web3. 0. js – BonisTech. You can use fetch_erc20_details to get the total supply of LP token or a pair contract. py; Uniswap v3 liquidity analysis; Uniswap v3 OHCLV candle price Uniswap arbitrage problem analysis. py; uniswap; python; or ask your own question. The v2 routers has a getAmountsOut function, which makes it possible to set slippage because I would know what is the exact exchange between two tokens in a pool. To interact with smart contracts, we need a Web3 library, for Python the Web3. NIKITA NIKITA. py in Python to call one of these contracts to obtain data from Uniswap. Contribute to xaderna/uniswap-arbitrage-2 development by creating an account on GitHub. Uniswap v3 Python API contains wrappers to interact with Uniswap v3 style DEXes including (but not limited to) uniswap; web3. You can hook on different chains just by creating Uniswap v3 price impact estimation; Uniswap v2 live price with web3. py arbitrage on uniswap. Issue plugging two arrays (first time how to swap tokens on uniswap using web3 js. js. your answer is for ethers. config. py documentation how to call smart contracts is here. exceptions. 0 votes. Host and manage packages Security. Commented Jan 6, 2023 at 20:05. Creating a Web3 instance: — `web3 = Web3 Calculate price Uniswap V3 uses the square root price Main function main. send_transaction(transaction) method. py to decode . How to do Swap from ETH for Tokens with Web3. I don't think Etherscan is exposing internal transaction api (or maybe as paid service) Swap tokens on Uniswap v2 compatible DEXes . py; Uniswap v3 liquidity analysis; Uniswap v3 OHCLV candle price I want to write a code to put liquidity on uniswap liquidity pool, but I haven't found any toturial or example code related to this. address}, got {log['address']}" You signed in with another tab or window. However, I have no idea how would I be able to set the slippage. you can safely skip this guide. – kfx. Reading live trades of different DEXes. Follow asked Dec 4, 2020 at 0:55. RPCs Uniswap v2 live price with web3. py and calls the Uniswap contract on Ethereum to obtain: a Here's a Python code snippet that uses Web3. py; uniswapv2; dvcr. Add a comment | web3. I've been trying to figure this out as well. One reason for this is that Solidity does not have floating point numbers. I don't see any static call in web3py documentation. py is the go-to library. Uniswap v3 price (minimal) This is a minimal example code for reading the live price of a single Uniswap v3 pool. In both cases it is necessary to first perform a classical approval for the permit2 contract to move your tokens, as it is that contracts allowance that will be spent. Follow asked Dec 29, 2022 at 13:41. You can hook on different chains just by creating a Web3 instance: from web3 import Web3 from web3. py; Swap tokens on Uniswap v3; Swap tokens on Uniswap v2 compatible DEXes; Chainlink price feed reading; Chainlink reading blockchain native token price; Uniswap v3 price (minimal) Uniswap v3 price impact estimation; Uniswap v2 live price with web3. I want to use Uniswap V3 Quoter function, but it's a write function. cake web3 lottery web3py smart-contract pancakeswap. Making swaps on Uniswap, For Python developers looking to interact with Ethereum, web3. I found this other topic answered with the same question, but I didn't understand the You signed in with another tab or window. Uniswap v3 price impact estimation; Uniswap v2 live price with web3. py on python3. I am trying to find the amount the wallet received in ETH within the transaction object. Additional context The reason I installed web3. address. Add a comment | 1 Answer Sorted by: Reset to default 2 . How to send bytes data to contract with web3. The Overflow Blog From bugs to uniswap; web3. youtube. pair. An analysis of Uniswap markets; Improved Price Oracles: Constant Function Market Makers. In. Gets the price entries using Uniswap v2 I've made a python web3 script that swaps ETH to Token using exactInputSingle function on Uniswap v3 Abritrum chain. how to swap tokens on uniswap using web3 js. Don't use the graph, the collect event table is empty on mainnet, I'm sure on Arbitrum it's even worse. js code. uniswap solidity contract: swapExactTokensForTokens Failed. When I built the Uniswap Protocol in 2018, it was an experiment to see if I could create something that fully embodied the values of Ethereum: transparent, secure, and accessible. - crjameson/python-defi-tutorials I'm using web3py to swap tokens, using the "swapExactETHForTokens" function, it's working perfectly, with the return hash I use the "web3. Web3 Python Gas Gwei not working: intrinsic gas too low. ValueError: {'code': -32000, 'message': 'insufficient funds for gas * price + value'} 0 Web3. Code You signed in with another tab or window. 11 doesn't work with web3. This guide shows you how to use web3. I am new to the crypto dev world, so please elaborate as much you can and if possible an example will be a lifesaver. Hot Network Questions Strings and arrays in Project Valhalla Looking at your code, I think the problem is with the ABI that you are loading into the contract object. - ‘uniswapv2_router2_contract’ is a Python object that interacts with the Uniswap V2 Router 2 contract. UniswapV3 swap DAI/USDT issue. 0 Web3 bsc token send with python , gas fee calculation. swapExactTokensForTokens estimateGas fails with execution reverted. This is an simple example script to swap one token to another securely. ), and building transactions with web3. ContractLogicError: execution reverted: UniswapV2Library: INSUFFICIENT_LIQUIDITY. ERC-20 token transfer with web3. account); const deployedContract = await new Python library for Uniswap, Aave, ChainLink, Enzyme and other protocols on BNB Chain, Polygon, How to use the library in your Python project. But if it wouldn't emit an event, you would have to enable tracing and trace all calls to a particular Uniswap v2 pool with this method signature. 4. Follow asked Nov 18, 2021 at 9:32. py . Transactions are successful and the script is working, but the problem is, when I reverse the swap (selling tokens to get ETH), I receive wETH instead of ETH. Here is an example code that calculates Uniswap pair contract price in few ways using web3-ethereum-defi library. 3; asked Apr 27, 2024 at 17:59. Follow asked Sep 27, 2021 at 13:53. 7. Atm, about 486 different pools a returned, but none of them are pool I'm expecting. Add a comment | Your Answer web3. tokenAddres = '0x0e09fabb73bd3ade0a17ecc321fd13a19e81ce82' #Cake tokenAddres = Web3 Add liquidity to Uniswap pool with Web3. Logs will be retrieved using the web3. py contains options for Mainnet, Ropsten and other test nets. Use Uniswap V3 SwapRouter via Web3. On Uniswap v2, this can be easily be solved by using swapExactTokensForETH, but Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I want to write a code to put liquidity on uniswap liquidity pool, but I haven't found any toturial or example code related to this. Kurt Kurt. Viewed 3k times 3 . Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Now that we have the information we need, let’s put them together in a python file that we call buy_token. I'm using web3. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Loading Tour Start Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Uniswap v3 historical price estimation . class PairDetails [source] . ⚠ This library has not been audited, so use at your own risk ! web3. fgtvnas kllui kqg grsb saxm iphcfmz cok zhhod qifrvcf ulng