eth-utils

import eth_utils

from eth_utils import (
    # Address handling
    is_address, to_checksum_address, is_checksum_address,
    # Data conversions
    to_bytes, to_hex, to_int, to_text,
    # ABI processing
    function_signature_to_4byte_selector, event_signature_to_log_topic,
    # Currency conversions
    from_wei, to_wei, denoms,
    # Hexadecimal utilities
    encode_hex, decode_hex, is_hex,
    # Type checking
    is_integer, is_string, is_bytes
)

from eth_utils import (
    to_checksum_address, to_wei, from_wei, 
    keccak, to_bytes, encode_hex
)

# Address validation and formatting
address = "0xd3cda913deb6f67967b99d67acdfa1712c293601"
checksum_addr = to_checksum_address(address)
print(checksum_addr)  # 0xd3CdA913deB6f67967B99D67aCDFa1712C293601

# Currency conversions
wei_amount = to_wei(1.5, 'ether')  # Convert 1.5 ETH to wei
eth_amount = from_wei(wei_amount, 'ether')  # Convert back to ETH

# Data conversions and hashing
data = to_bytes(text="Hello, Ethereum!")
hash_result = keccak(data)
hex_hash = encode_hex(hash_result)

# ABI function selector generation
from eth_utils import function_signature_to_4byte_selector
selector = function_signature_to_4byte_selector("transfer(address,uint256)")
print(encode_hex(selector))  # 0xa9059cbb

def is_address(value) -> bool: ...
def to_checksum_address(value) -> str: ...
def is_checksum_address(value) -> bool: ...
def to_canonical_address(address) -> bytes: ...
def is_same_address(left, right) -> bool: ...

def function_signature_to_4byte_selector(function_signature: str) -> bytes: ...
def event_signature_to_log_topic(event_signature: str) -> bytes: ...
def abi_to_signature(abi_element) -> str: ...
def filter_abi_by_type(abi_type: str, contract_abi) -> list: ...

def to_bytes(primitive=None, hexstr=None, text=None) -> bytes: ...
def to_hex(primitive=None, hexstr=None, text=None) -> str: ...
def to_int(primitive=None, hexstr=None, text=None) -> int: ...
def to_text(primitive=None, hexstr=None, text=None) -> str: ...

def to_wei(number, unit: str) -> int: ...
def from_wei(number: int, unit: str) -> Union[int, Decimal]: ...
class denoms: 
    wei: int
    gwei: int
    ether: int
    ...

def encode_hex(value) -> str: ...
def decode_hex(value: str) -> bytes: ...
def is_hex(value) -> bool: ...
def add_0x_prefix(value: str) -> str: ...
def remove_0x_prefix(value: str) -> str: ...

def is_integer(value) -> bool: ...
def is_string(value) -> bool: ...
def is_bytes(value) -> bool: ...
def is_boolean(value) -> bool: ...
def is_list_like(obj) -> bool: ...

def keccak(primitive=None, hexstr=None, text=None) -> bytes: ...

def apply_formatters_to_dict(formatters, value) -> dict: ...
def apply_formatter_if(condition, formatter, value): ...
def apply_key_map(key_mappings, value) -> dict: ...

def get_logger(name: str) -> Logger: ...
def get_extended_debug_logger(name: str) -> ExtendedDebugLogger: ...
def get_environment_summary() -> str: ...

def network_from_chain_id(chain_id: int) -> Network: ...
def name_from_chain_id(chain_id: int) -> str: ...
class Network:
    chain_id: int
    name: str
    shortName: str
    symbol: str

def apply_to_return_value(callback): ...
def to_tuple(func): ...
def flatten_return(func): ...
from eth_utils.curried import filter_abi_by_type, apply_formatter_if

class ValidationError(Exception):
    """Raised when validation of input data fails."""