首先,我们需要定义一个函数,命名为swap_endian,它接收一个整数参数。 defswap_endian(num):# 输入一个整数 num,将该整数的字节序进行转换 1. 2. 步骤2: 将整数转换为字节bytes 接下来,我们需要将整数字段转换为字节。 byte_array=num.to_bytes((num.bit_length()+7)//8,byteorder='big')# 将整数转换...
print("处理后的结果为:",swap_bytes(num)) 1. 4. 完整代码 下面是整个实现的完整代码: importsysdefis_little_endian():num=1returnsys.byteorder=='little'ifnum&0xffelseFalsedefswap_bytes(num):return((num&0xff)<<24)|((num&0xff00)<<8)|((num&0xff0000)>>8)|((num>>24)&0xff)num=i...
1. 使用struct模块进行字节序转换 importstruct# 将整数转换为大字节序num=0x12345678big_endian_bytes=struct.pack('>I',num)# '>I'表示大字节序,4字节无符号整数print("大字节序:",big_endian_bytes)# 将整数转换为小字节序little_endian_bytes=struct.pack('<I',num)# '<I'表示小字节序,4字节无符号...
bytes(int) 指定字节的bytes,被0填充 bytes(iterable_of_ints) -> bytes [0,255]的int组成的可迭代对象 bytes(string, encoding[, errors]) -> bytes 等价于string.encode() bytes(bytes_or_buffer) -> immutable copy of bytes_or_buffer 从一个字节序列或者buffer复制出一个新的不可变的bytes对象 使用b...
New byteswap() function converts big-endian samples to little-endian and vice versa. (Contributed by Serhiy Storchaka in bpo-19641.) All audioop functions now accept any bytes-like object. Strings are not accepted: they didn't work before, now they raise an error right away. (Contributed ...
tx tx.encode().hex() print("Transaction size in bytes: ", len(tx.encode())) 最后,我们来算交易的id def tx_id(self) -> str: return sha256(sha256(self.encode()))[::-1].hex() # little/big endian conventions require byte order swap Tx.id = tx_id # monkey patch into the class...
def tx_id(self) -> str: return sha256(sha256(self.encode()))[::-1].hex() # little/big endian conventions require byte order swap Tx.id = tx_id # monkey patch into the class tx.id() # once this transaction goes through, this will be its id '245e2d1f87415836cbb7b0bc84e40f4...
While the struct module gives you control over the byte order and alignment through the angle bracket syntax (< and >), Python arrays remain agnostic about the interpretation of their underlying bytes. However, they do let you swap the byte order within each array element if you know that ...
ctypes是 Python 的外部函数库。它提供了与 C 兼容的数据类型,并允许调用 DLL 或共享库中的函数。可使用该模块以纯 Python 形式对这些库进行封装。 ctypes 教程 注意:在本教程中的示例代码使用doctest进行过测试,保证其正确运行。由于有些代码在 Linux,Windows 或 Mac OS X 下的表现不同,这些代码会在 doctest ...
If you run this in a virtual machine that emulates a big-endian CPU (PowerPC), then something like this happens: Shell $ python -c 'import sys; print(repr(sys.byteorder))' 'big' In this example application, your application-layer protocol defines the header as Unicode text with a ...