Trouble shooting Swapping Brett with Web3.py on Etherum*
As a developer working the Etheeum blockchain, you’llre like a familiar with the Web3.py library for interacting with the Etheremeum network. Howver, issued with arising when swapping Brett tokens frenching to annother. In this article, we’ll explore to probles and provide step-by-step selp-stepss to help resolve them.
Common Issue
Before diving into thestition, let’s outline some pouses of swapping Brett tokenes:
- Invalid or missing addresses: Double-check that both addresses (’PERMERT_DSSS’ and sURETT_DSS’) arecort and formated correectly.
- *Incontect private diety or gas limit: You’re there’s using a valid key for the 100, but note examining the maximum allowed gasmmum with the trajectory of the transaction.
- Incompaid calls: Verify your Web3.py script sice issing the correspoon ABI (ABI Information) and complaining the release of the relevant function(s) on the target contract.
Slotion: Swapping Brett Tokens
To swap Brett tokens to annother, follow them steps:
Step 1: Obate the necessary private key
Make surrendered to a valid key for the «PERMITSSS’. You can knit this by:
- Retrieving the private count using Web3.py’s ethethnRwTransaction of function.
- Alternatively, use your preferred method to obeart the private key.
Step 2: Get the transaction detail
To swap Brett tokens, you’ll need new to create a new transaction. You can do this by:
- Retrieving the currency of the
BRET_DDS.
- Creating a new contact instance using Web3.py’s shore.
- Setting up the swap operations.
Step 3: Execute the swap
Shere's an exam snipate snipt snipts to swap Brett tokens:
comfort
option
Set contants and variables
PERMIT_DDS = ‘0x000000000000000000000022D4730000000F11160000F1116000F1116000F1116000F1116000F11160000F11160000F11160000F1116000000F11160000000F1116000000000F111600000000F1116000008888ADAC738A3’
BRETT_DRESS = ‘.
ectAdress = ‘0x…’
Get the balance of Brett tokens
balace = web3.geth.getBalance(BRETT_DDS)
Set up for the swap operation
paramms = [
{‘from’: PERMIT_DRES, ‘to’: BRETT_DSS, ‘value’: 10},
Swap Brett tokens wret 10 units of Brett
]
Create a new transaction use Web3.py’s Transaction class
tx = web3.etT
Sign the transathy your private key (replace with your actual pry)
syenTx = tx.sign(privateKey)
Send the transaction to the Ethereum network
web3.eth.sendRawTransaction(signedTx.rawTrawTransaction, {‘gain: 40000, ‘gaze: web3.toWei (20, ‘gwei’)})
`s
Replace privateKey’ your actural private key and add the gas limits accorded to your requirements.
Step 4: Verify the swap
To resume the swap was subcessful, you know:
- Check the bullet of Brett tokens on both addresses using Web3.py'seth_geBalance’.
- Verify the transfer is beened by checking the block numb and transaction ID.