如何计算已编译的着色器代码的校验和？

import hashlib

def calculate_checksum(shader_code):
    sha256 = hashlib.sha256()
    sha256.update(shader_code.encode('utf-8'))
    checksum = sha256.hexdigest()
    return checksum

import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class ChecksumCalculator {
    public static String calculateChecksum(String shaderCode) throws NoSuchAlgorithmException {
        MessageDigest digest = MessageDigest.getInstance("SHA-256");
        byte[] hash = digest.digest(shaderCode.getBytes(StandardCharsets.UTF_8));
        StringBuilder hexString = new StringBuilder();
        for (byte b : hash) {
            String hex = Integer.toHexString(0xff & b);
            if (hex.length() == 1) hexString.append('0');
            hexString.append(hex);
        }
        return hexString.toString();
    }
}