python分别使用pickle和struct 写入和读取二进制文件

使用 pickle 写入和读取二进制文件的示例代码如下：

写入：

import pickle

data = {"name": "Tom", "age": 18}

# 将数据写入二进制文件
with open("data.bin", "wb") as f:
    pickle.dump(data, f)

读取：

import pickle

# 从二进制文件中读取数据
with open("data.bin", "rb") as f:
    data = pickle.load(f)

print(data)

使用 struct 写入和读取二进制文件的示例代码如下：

写入：

import struct

data = {"name": "Tom", "age": 18}

# 将数据写入二进制文件
with open("data.bin", "wb") as f:
    name = data["name"].encode("utf-8")
    age = data["age"]
    f.write(struct.pack("I", len(name)))
    f.write(name)
    f.write(struct.pack("I", age))

读取：

import struct

# 从二进制文件中读取数据
with open("data.bin", "rb") as f:
    name_len = struct.unpack("I", f.read(4))[0]
    name = f.read(name_len).decode("utf-8")
    age = struct.unpack("I", f.read(4))[0]

data = {"name": name, "age": age}

print(data)