Créer un fichier binaire en Python

import struct

def main():    
    with open("data", "wb") as fout:        
        for x in [0xFF, 0x12, 0x89]:            
            fout.write(struct.pack("B", x))

if __name__ == "__main__":    
    main()

% hexdump data
0000000 ff 12 89
0000003

def main():
    with open("data", "wb") as fout:
        bary = bytearray([0xFF, 0x12, 0x89])
        bary.append(0)
        bary.extend([1, 127])
        fout.write(bary)

if __name__ == "__main__":
    main()

% hexdump data
0000000 ff 12 89 00 01 7f
0000006

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