Python 3 TypeError: must be str, not bytes with sys.stdout.write()

Question

I was looking for a way to run an external process from python script and print its stdout messages during the execution.
The code below works, but prints no stdout outp

Answer 1

While the accepted answer will work fine if the bytes you have from your subprocess are encoded using sys.stdout.encoding (or a compatible encoding, like reading from a tool that outputs ASCII and your stdout uses UTF-8), the correct way to write arbitrary bytes to stdout is:

sys.stdout.buffer.write(some_bytes_object)

This will just output the bytes as-is, without trying to treat them as text-in-some-encoding.