Question: In python 2.x I could do this:

```
import sys, array
a = array.array('B', range(100))
a.tofile(sys.stdout)
```

Now however, I get a `TypeError: can't write bytes to text stream`. Is there some secret encoding that I should use?

Answer: 
A better way:

```
import sys
sys.stdout.buffer.write(b"some binary data")

```
```
import os
os.write(1, a.tostring())

```

or, `os.write(sys.stdout.fileno(), …)` if that's more readable than `1` for you.