'declare/create class member of another class type in Python?

Is it possible to declare class member of another class type in Python like C? for ex. struct transmit_message below has a member config of struct config_data type.

in C:

enum message_type {

MESSAGE_NONE,
MESSAGE_PING,
WRITE_DATA,
READ_DATA,

};

struct read_data {

int gender;
unsigned int age;

};

struct write_data {

bool flag;
char name[10];

};

struct config_data {

write_data write_config;
read_data read_config;

};

struct transmit_message {

message_type type;
config_data config;};

transmit_message message; // **how to create similar object in python?**


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