winpexpect: winspawn is blocking

Question

I am trying to use winpexpect to have an interactive subprocesses in Python. I am completely baffled. When I run a unit test, winspawn executes normally along with all the expects. When I run my program as a whole, winspawn inexplicably blocks forever. How can this be? As far as I know, winspawn is non-blocking.

Answer 1

So, I found out that the string I was passing to winpexpect was Unicode in one case and str in another case. It seems that winpexpect will block at winspawn if the string you pass in is unicode.