TypeError: POST data should be bytes or an iterable of bytes. It cannot be of type str - api

Question

My Code.
#!/usr/bin/env python
#coding: utf-8
userid="NicoNicoCreate#gmail.com"
passwd="********"
import sys, re, cgi, urllib, urllib.request, urllib.error, http.cookiejar, xml.dom.minidom, time, urllib.parse
import simplejson as json
def getToken():
html = urllib.request.urlopen("http://www.nicovideo.jp/my/mylist").read()
for line in html.splitlines():
mo = re.match(r'^\s*NicoAPI\.token = "(?P<token>[\d\w-]+)";\s*',line)
if mo:
token = mo.group('token')
break
assert token
return token
def mylist_create(name):
cmdurl = "http://www.nicovideo.jp/api/mylistgroup/add"
q = {}
q['name'] = name.encode("utf-8")
q['description'] = ""
q['public'] = 0
q['default_sort'] = 0
q['icon_id'] = 0
q['token'] = token
cmdurl += "?" + urllib.parse.urlencode(q).encode("utf-8")
j = json.load( urllib.request.urlopen(cmdurl), encoding='utf-8')
return j['id']
def addvideo_tomylist(mid,smids):
for smid in smids:
cmdurl = "http://www.nicovideo.jp/api/mylist/add"
q = {}
q['group_id'] = mid
q['item_type'] = 0
q['item_id'] = smid
q['description'] = u""
q['token'] = token
cmdurl += "?" + urllib.parse.urlencode(q).encode("utf-8")
j = json.load( urllib.request.urlopen(cmdurl), encoding='utf-8')
time.sleep(0.5)
#Login
opener = urllib.request.build_opener(urllib.request.HTTPCookieProcessor(http.cookiejar.CookieJar()))
urllib.request.install_opener(opener)
urllib.request.urlopen("https://secure.nicovideo.jp/secure/login",
urllib.parse.urlencode( {"mail":userid, "password":passwd}) ).encode("utf-8")
#GetToken
token = getToken()
#MakeMylist&AddMylist
mid = mylist_create(u"Testlist")
addvideo_tomylist(mid, ["sm9","sm1097445", "sm1715919" ] )
MyError.
Traceback (most recent call last):
File "Nico3.py", line 48, in <module>
urllib.parse.urlencode( {"mail":userid, "password":passwd}) ).encode("utf-8")
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/urllib/request.py", line 162, in urlopen
return opener.open(url, data, timeout)
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/urllib/request.py", line 463, in open
req = meth(req)
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/urllib/request.py", line 1170, in do_request_
raise TypeError(msg)
TypeError: POST data should be bytes or an iterable of bytes. It cannot be of type str.
I've tried encode but it did not help.
I'm japanese accademic students.
It was not able to be settled by my knowledge.
I am aware of this similar question, TypeError: POST data should be bytes or an iterable of bytes. It cannot be str, but am too new for the answer to be much help.

Answer 1

You paren is in the wrong place so you are not actually encoding:
.urlencode({"mail":userid, "password":passwd}).encode("utf-8")) # <- move inside