Python
# Program to write a small binary file
filename = input("Enter binary filename to write: ")
data = bytes([0, 1, 2, 3, 255])
with open(filename, "wb") as f:
f.write(data)
print("Binary data written to", filename)Output
Enter binary filename to write: sample.bin Binary data written to sample.bin
Opening in "wb" mode writes raw bytes; here we create a simple bytes object as a demo.