Saikat K Aviksaikat

💭

I tell people secrets, it makes them like me

Aviksaikat / loadInterfacesApe.py

Created August 16, 2023 20:29

Load a contract using interface in ape

	# create a interfaces folder inside the contracts folder & put the interfaces inside them
	from ape import project

	contract = project.contractName.at(contract_address)

	# ex
	uniswap_v2_router = project.ISwapV2Router02.at(Uniswap_V2_Router_address)

Aviksaikat / fix_after_gitignore.sh

Created August 14, 2023 13:42

remove ignored files from .gitignore

	#!/bin/bash

	git rm -r --cached . && git add . && git commit -am "Remove ignored files"
	echo "Now run git push to make the changes to the remove repo"

Aviksaikat / remove.sh

Created May 18, 2023 11:09

remove none tagged docker images

docker images | grep "<none>" | awk '{print $3}' | xargs docker rmi

Aviksaikat / update_docker_images.sh

Last active May 18, 2023 11:08

Update all your docker images

	docker images --format "{{.Repository}}:{{.Tag}}" \| xargs -L1 docker pull

	# then remove the "<none>" tagged images
	docker images \| grep "<none>" \| awk '{print $3}' \| xargs docker rmi

Aviksaikat / encodeWithSignature.py

Created May 16, 2023 23:51

How to do `abi.encodeWithSignature` in python

	value = Contract.methodName.encode_input()
	print(value)
	# wrong
	# >> '0xa7a7e4e8'
	value = Contract.methodName.encode_input()
	# add padding to make it 32 bytes
	value = value + "0" * (66 - len(value))
	print(value)
	# correct
	#>> '0xa7a7e4e800000000000000000000000000000000000000000000000000000000'

Aviksaikat / int_to_b32.py

Created May 15, 2023 13:27

convert an integer to bytes32

	from brownie import web3

	value = 1

	# * convert it to bytes32
	value = value.to_bytes(32, byteorder="big")
	>>> value
	b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01'

	>>> value.hex()

Aviksaikat / b32-u256.py

Last active May 20, 2024 07:43

bytes32 to int(uint256)

Aviksaikat / ape-config.yaml

Last active May 15, 2023 19:46

Sample config file for ApeWorkX

	name: simple_storage
	plugins:
	- name: solidity
	version: 0.6.3 # version of the plugin
	- name: ganache
	- name: alchemy
	- name: hardhat
	# - name: ens
	# - name: etherscan
	ethereum:

Aviksaikat / network-config.yaml

Created May 6, 2023 12:54

Test locally on goerli-fork. Add this to your `network-config.yaml`

Aviksaikat / abi_encode.py

Last active May 20, 2024 07:44

Correct way to generate keccak256 hash of multiple data types using python

	from brownie import web3
	# wrong
	print(web3.solidityKeccak(["uint256", "address", "uint256"],[2, "0x0000000000000000000000000000000000001337", 8948253]).hex())
	# >> 0x7c251610f9474d6a5f00096d05e0ae40e433cae67c90e400cf88aad9f24398ef

	# right
	from eth_abi import encode
	encoded_data = encode(
	["uint256", "address", "uint256"],
	[2, "0x0000000000000000000000000000000000001337", 8948253],