multicall.py/readme.md

multicall.py

python interface for makerdao's multicall and a port of multicall.js

installation

pip install multicall

example

from multicall import Call, Multicall

# assuming you are on kovan
MKR_TOKEN = '0xaaf64bfcc32d0f15873a02163e7e500671a4ffcd'
MKR_WHALE = '0xdb33dfd3d61308c33c63209845dad3e6bfb2c674'
MKR_FISH = '0x2dfcedcb401557354d0cf174876ab17bfd6f4efd'

def from_wei(value):
    return value / 1e18

multi = Multicall([
    Call(MKR_TOKEN, ['balanceOf(address)(uint256)', MKR_WHALE], [['whale', from_wei]]),
    Call(MKR_TOKEN, ['balanceOf(address)(uint256)', MKR_FISH], [['fish', from_wei]]),
    Call(MKR_TOKEN, 'totalSupply()(uint256)', [['supply', from_wei]]),
])

multi()  # {'whale': 566437.0921992733, 'fish': 7005.0, 'supply': 1000003.1220798912}