Bugfix foo_pep333.py for uwsgi

uwsgi do not handle str, only bytes.

README

@@ -28,3 +28,7 @@ Example : linking against a debug build of python :
 logging to file example :
 -------------------------
 -L '/tmp/foo.log;0xff;{datetime} {msg} {ident}'
+
+uwsgi equivalent :
+------------------
+uwsgi_python3 --fastcgi-socket 127.0.0.1:9000 --module foo_pep333:entrypoint --processes=5

foo_pep333.py

@@ -5,7 +5,6 @@ from pprint import pformat
 
 def entrypoint(env, start_response):
 	write_body = start_response("200 OK", [('Content-type', 'text/plain')])
-
 	if not "wsgi.input" in env:
 		raise ValueError("Given environ does not contain any 'wsgi.input' key !")
 	data_in = env["wsgi.input"]
@@ -14,8 +13,8 @@ def entrypoint(env, start_response):
 	#data = data_in.readlines()
 	while True:
 		data = data_in.read(98)
-		write_body("POST data : %s\n====\n" % repr(data))
+		write_body(("POST data : %s\n====\n" % repr(data)).encode())
 		if not data:
 			break
-	write_body("Environ data :\n'%s'\n====\n" % pformat(env))
-	return ['Hello world !\n']
+	write_body(("Environ data :\n'%s'\n====\n" % pformat(env)).encode())
+	return [b'Hello world !\n']