如何将键字节数组转换为字符串，反之亦然

# Python示例代码
byte_array = [72, 101, 108, 108, 111]  # 键字节数组
ascii_string = ''.join(chr(byte) for byte in byte_array)  # 转换为ASCII编码的字符串
print(ascii_string)

# Python示例代码
byte_array = [228, 184, 150, 231, 149, 140]  # 键字节数组
utf8_string = bytes(byte_array).decode('utf-8')  # 转换为UTF-8编码的字符串
print(utf8_string)

# Python示例代码
import base64

byte_array = [104, 101, 108, 108, 111]  # 键字节数组
base64_string = base64.b64encode(bytes(byte_array)).decode('utf-8')  # 转换为Base64编码的字符串
print(base64_string)

# Python示例代码
ascii_string = "Hello"  # ASCII编码的字符串
byte_array = [ord(char) for char in ascii_string]  # 转换为键字节数组
print(byte_array)

# Python示例代码
utf8_string = "你好"  # UTF-8编码的字符串
byte_array = bytearray(utf8_string, 'utf-8')  # 转换为键字节数组
print(byte_array)

# Python示例代码
import base64

base64_string = "aGVsbG8="  # Base64编码的字符串
byte_array = base64.b64decode(base64_string)  # 转换为键字节数组
print(byte_array)