Right now, it seems impossible to use cgi.FieldStorage in 3.0 if you're
giving it environ['wsgi.input'] like so:

    post_data = cgi.FieldStorage(
        fp=environ["wsgi.input"],
        environ=environ,
        keep_blank_values=True
        )


It gives the following error:

      File "/usr/local/lib/python3.0/cgi.py", line 489, in __init__
        self.read_urlencoded()
      File "/usr/local/lib/python3.0/cgi.py", line 589, in read_urlencoded
        self.strict_parsing):
      File "/usr/local/lib/python3.0/urllib/parse.py", line 377, in
parse_qsl
        pairs = [s2 for s1 in qs.split('&') for s2 in s1.split(';')]
TypeError: Type str doesn't support the buffer API