Flatten contract source using CLI

[quintinbrooks]

Overview

Currently, Brownie doesn't provide a way to flattening smart contracts. Feature for flattening smart contracts can be a way for testing contracts with Brownie, while deploying them using another tool. Also, it can simplify the tasks required for verifying an smart contract on the Etherscan.

Specification

For the CLI following simple argument can be used:

brownie --flatten

Dependencies

#411 is related to this issue. Because, probably flattening smart contracts (written in Solidity) will make it easier to verify them on Etherscan.

[iamdefinitelyahuman]

This could be useful as a flag within brownie compile, I think.

[matnad]

Implemented by #914.
@quintinbrooks Use ContractContainer.get_verification_info()["flattened_source"]

[nazariyv]

@matnad looks like 'flattened_source' is no longer available in 1.17.0?

[rodriguesmvinicius]

@matnad looks like 'flattened_source' is no longer available in 1.17.0?

same here using 1.18.1 dont recognize the key

[DanielVF]

container = YourContractName
print("\n\n".join([x['content'] for x in container.get_verification_info()['standard_json_input']['sources'].values()]))