import sys

# NOTE: displaying "non-printing" characters like the
# ones below will likely wreak havoc with your terminal,
# since many of them are control characters. Think of
# them as "Medusa characters": never look directly at them.
#
# To use this program, pipe it to a file:
# $ python example.py > input
#
# To "look at" what's in input, run it through a converter
# (each tool shown below has its merits; try both!):
# $ hexdump -C input
# OR
# $ xxd input
#
# Once you have a program that produces the string you
# want, pipe it into your program like so:
# $ ./prog < input

# write 100 binary zero bytes to stdout
sys.stdout.buffer.write(b"\x00" * 100)

# then write the number 0xaa030201
# remember that A32 is little endian, so the byte
# order is swapped before the number is interpreted
sys.stdout.buffer.write(b"\x01\x02\x03\xaa")