• Truffle v4.1.15 (core: 4.1.15)
• Solidity v0.4.25 (solc-js)

change python version to 2.X(ex:2.7.9)

git clone https://github.com/moldcoin/dex-contract.git
npm install

truffle develop
mtruffle(develop)> migrate

before migrate

change migrations/3_deploy_moldex.js second argument to your address

truffle migrate --network ropsten

Error: Attempting to run transaction which calls a contract function, but recipient address 0x17647ef21c6fd7e67486c57affBb1faf9eb30ea5 is not a Contract address

migrate --reset

truffle test