code_style.md

Code styles

type hints

• for inputs, be flexible
• for outputs, be strict

# recommended
def receives_address(address: Union[Base32Address, str]) -> Base32Address:
    return address

def receives_hash(hash: Union[_Hash32, str]) -> HexBytes:
    return hash

such style suit for conflux_web3.types, tests._test_helpers.type_check

Optional or | None

• for inputs, use Optional
• for outputs, use | None