Question

I need to send a message of bytes in Python and I need to convert an unsigned integer number to a byte array. How do you convert an integer value to an array of four bytes in Python? Like in C:

uint32_t number=100;
array[0]=(number >>24) & 0xff;
array[1]=(number >>16) & 0xff;
array[2]=(number >>8) & 0xff;
array[3]=number & 0xff;

Can someone show me how? It is strange to me at first to program without types.

Answer 1

Sven has you answer. However, byte shifting numbers (as in your question) is also possible in Python:

>>> [hex(0x12345678 >> i & 0xff) for i in (24,16,8,0)]
['0x12', '0x34', '0x56', '0x78']