Types¶

The following types are available from the eth_typing module.

i.e.

from eth_typing import TypeStr

Application Binary Interface¶

Enumerables¶

ForkName¶

Class that contains the different names used to represent hard forks on the Ethereum network.

class ForkName:
    Frontier = 'Frontier'
    Homestead = 'Homestead'
    EIP150 = 'EIP150'
    EIP158 = 'EIP158'
    Byzantium = 'Byzantium'
    Constantinople = 'Constantinople'
    Metropolis = 'Metropolis'

ChainId¶

IntEnum class defining EVM-compatible network name enums as their respective chain id int values.

To learn more about chain ids, see CAIP-2 for details.

The list of chain ids is available from the ethereum-lists/chains repository.

class ChainId(IntEnum):
    # L1 networks
    ETH = 1
    EXP = 2
    ROP = 3
    RIN = 4
    GOR = 5
    # L2 networks
    OETH = 10
    GNO = 100

Discovery¶

NodeID¶

A 32-byte identifier for a node in the Discovery DHT

NodeID = NewType('NodeID', bytes)

EthPM¶

ContractName¶

Any string conforming to the regular expression [a-zA-Z][a-zA-Z0-9_]{0,255}.

ContractName = NewType('ContractName', str)

URI¶

Any string that represents a URI.

URI = NewType('URI', str)

EVM¶

Address¶

Any bytestring representing a canonical address.

Address = NewType('Address', bytes)

HexAddress¶

Any HexStr representing a hex encoded address.

HexAddress = NewType('HexAddress', HexStr)

ChecksumAddress¶

Any HexAddress that is formatted according to ERC55.

ChecksumAddress = NewType('ChecksumAddress', HexAddress)

AnyAddress¶

Any of Address, HexAddress, ChecksumAddress.

AnyAddress = TypeVar('AnyAddress', Address, HexAddress, ChecksumAddress)

Hash32¶

Any 32 byte hash.

Hash32 = NewType('Hash32', bytes)

BlockNumber¶

Any integer that represents a valid block number on a chain.

BlockNumber = NewType('BlockNumber', int)

BlockIdentifier¶

Either a 32 byte hash or an integer block number

BlockIdentifier = Union[Hash32, BlockNumber]

Encodings¶

HexStr¶

Any string that is hex encoded.

HexStr = NewType('HexStr', str)

Primitives¶

Any of bytes, int, or bool used as the Primitive arg for conversion utils in ETH-Utils.

Primitives = Union[bytes, int, bool]