strace python -c "import os; print(os.urandom(32).hex())"
.....
getrandom("\xd0\x71\x1f\x07\x8a\x56\x66\x05\x1d\xcd\x0e\x68\x57\xe6\x1a\xed\xf4\x0b\xe7\x66\x1b\x6a\xce\xad\x72\xb1\xff\xea\x09\x8c\xbc\x13", 32, 0) = 32
write(1, "d0711f078a5666051dcd0e6857e61aed"..., 65d0711f078a5666051dcd0e6857e61aedf40be7661b6acead72b1ffea098cbc13
) = 65
....