With python3, without universal_newlines=True, Popen().stdout.read() will return a byte array, while find(str) expects to operate on a string. I've checked that this still works with python2 as well. --- scripts/Xspice | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/scripts/Xspice b/scripts/Xspice index 41fd80c..927dcb1 100755 --- a/scripts/Xspice +++ b/scripts/Xspice @@ -135,7 +135,7 @@ def agents_new_enough(args): return False for f in [args.vdagent_exec, args.vdagentd_exec]: - if Popen(args=[f, '-h'], stdout=PIPE).stdout.read().find('-S') == -1: + if Popen(args=[f, '-h'], stdout=PIPE, universal_newlines=True).stdout.read().find('-S') == -1: return False return True -- 2.9.3 _______________________________________________ Spice-devel mailing list Spice-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/spice-devel