如何使用Python从已知私钥生成以太公钥

import hashlib
import ecdsa

def generate_ethereum_public_key(private_key):
    # 将私钥转换为字节格式
    private_key_bytes = bytes.fromhex(private_key)

    # 使用椭圆曲线数字签名算法（ECDSA）生成公钥
    signing_key = ecdsa.SigningKey.from_string(private_key_bytes, curve=ecdsa.SECP256k1).verifying_key

    # 获取公钥的字节格式
    public_key_bytes = (b"\04" + signing_key.to_string())

    # 对公钥进行Keccak-256哈希运算
    keccak_hash = hashlib.sha3_256(public_key_bytes).digest()

    # 取Keccak-256哈希运算结果的后20个字节作为以太公钥
    ethereum_public_key = keccak_hash[-20:].hex()

    return ethereum_public_key

private_key = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"
ethereum_public_key = generate_ethereum_public_key(private_key)
print("以太公钥:", ethereum_public_key)