import struct

打开文件并以二进制模式写入数据

with open('data.bin', 'wb') as file: # 写入整数类型数据 num = 10 file.write(struct.pack('i', num))

# 写入浮点数类型数据
f_num = 3.14
file.write(struct.pack('f', f_num))

# 写入字符串类型数据
string = 'hello world'
b_string = bytes(string, 'utf-8')
str_len = len(b_string)
file.write(struct.pack('i', str_len) + b_string)

# 写入布尔类型数据
boolean = True
file.write(struct.pack('?', boolean))

读取文件中的数据

with open('data.bin', 'rb') as file: # 读取整数类型数据 num_read = struct.unpack('i', file.read(4))[0] print(num_read)

# 读取浮点数类型数据
f_num_read = struct.unpack('f', file.read(4))[0]
print(f_num_read)

# 读取字符串类型数据
str_len_read = struct.unpack('i', file.read(4))[0]
b_string_read = file.read(str_len_read)
string_read = b_string_read.decode('utf-8')
print(string_read)

# 读取布尔类型数据
boolean_read = struct.unpack('?', file.read(1))[0]
print(boolean_read)