POST json with Python3 script

You often want to POST json with a little Python3 script (appropriate).

First, sample code.

import urllib.request, json

if __name__ == '__main__':
    url = "http://xxxx/xxxx" 
    method = "POST"
    headers = {"Content-Type" : "application/json"}

    #Convert Python objects to JSON
    obj = {"xxx" : "xxxx", 123 : 123} 
    json_data = json.dumps(obj).encode("utf-8")

    #Prepare http request and POST
    request = urllib.request.Request(url, data=json_data, method=method, headers=headers)
    with urllib.request.urlopen(request) as response:
        response_body = response.read().decode("utf-8")

Next, as a simple example, use "Nico Nico Douga" Snapshot Search API "" to play back the search results of "Yuzuki Yukari". I would like to get 30 videos with a large number.

import urllib.request, json

if __name__ == '__main__':
    url = "http://api.search.nicovideo.jp/api/snapshot/"
    method = "POST"
    obj = {
        "query" : "Yuitsuki Yukari",
        "service" : ["video"],
        "search" : ["title", "description", "tags"],
        "join" : ["title", "view_counter"],
        "sort_by" : "view_counter",
        "order" : "desc",
        "size" : 30,
        "issuer" : "xxxxxxxxxxxxxxxxxxxxx"
    }
    json_data = json.dumps(obj).encode("utf-8")
    headers = {"Content-Type" : "application/json"}

    request = urllib.request.Request(url, data=json_data, headers=headers, method=method)
    with urllib.request.urlopen(request) as response:
        response_body = response.read().decode("utf-8")
        
        result_objs = json.loads(response_body.split('\n')[0])
        for result_obj in result_objs["values"]:
            print("{0:<10}{1}".format(result_obj["view_counter"], result_obj["title"]))

#2903887 [Hatsune Miku] This is the Happiness and Security Committee. 【original】
#2331059 Mi-w-na-w-gi-w-w-ki-w-www (Shinobue withdrawal symptom L5)
#1979283 [Minecraft] Guerrilla craft Build a line of defense around and lay mines around#1
#1896978 [Minecraft] Guerrilla Craft Build a line of defense around you and lay mines around#5
#1805589 [Minecraft] Yukari "Let's blow up the Mage Tower" part1 [VOICEROID+The real condition]
#1662622 [Yuzuki Yukari] I had a monster without a name sung [PSYCHO-PASS】
#1617931 [Minecraft] Guerrilla Craft Build a line of defense around you and lay mines around#3
#1587257 [Hatsune Miku] I found a way to be happy forever. 【original】
#1531263 [Yuzuki Yukari] There seems to be a hidden command that makes you happy [Original]
#1499237 [Minecraft] Guerrilla Craft Build a line of defense around you and lay mines around#2
#1424024 [Yuzuki Yukari] Churrilla Churrilla Daddadda!
#1391173 [Minecraft] Guerrilla Craft Build a line of defense around you and lay mines around#7
#1356847 [Minecraft] Guerrilla Craft Build a line of defense around you and lay mines around#6
#1354592 [Minecraft] Yukari "Let's blow up the Mage Tower" part3 [VOICEROID+The real condition]
#1261669 [Minecraft] Yukari "Let's blow up the Mage Tower" part2 [VOICEROID+The real condition]
#1241053 [Minecraft] Guerrilla Craft Build a line of defense around you and lay mines around#8
#1223469 [Minecraft] Guerrilla Craft Build a line of defense around you and lay mines around#4
#1201715 [Minecraft] Yukari "Let's blow up the Mage Tower" part4 [VOICEROID+The real condition]
#1182955 [Minecraft] Guerrilla Craft Build a line of defense around and lay mines around#9
#1177519 [Minecraft] Yukari "Let's blow up the Mage Tower" part9 [VOICEROID+The real condition]
#1069852 [MAYU] A little happiness that I want to bring to fruition. 【original】
#1045793 [Minecraft] Guerrilla Craft Build a line of defense around and lay mines around ⑩
#1040149 [Minecraft] Yukari "Let's blow up the Mage Tower" part5 [VOICEROID+The real condition]
#1008825 [Minecraft] Yukari "Let's blow up the Mage Tower" part6 [VOICEROID+The real condition]
#993675 [Yuzuki Yukari] Goodbye Chain Saw
#963262 [Minecraft] Yukari "Let's blow up the Mage Tower" part7 [VOICEROID+The real condition]
#927444 [Minecraft] Yukari "Let's blow up the Mage Tower" part8 [VOICEROID+The real condition]
#895328 [Minecraft] Guerrilla Craft Build a line of defense around you and spread land mines ⑫
#892567 [Minecraft] Yukari "Let's blow up the Mage Tower" final episode [VOICEROID+The real condition]
#878046 [Minecraft] Guerrilla Craft Build a line of defense around and lay mines around ⑪

There are some caveats, so I'll briefly introduce them as well.

--The data to be POSTed, that is, the argument specified in data of ʻurllib.request.Request ()must be of typebytes. In short, str does not work, and you need to convert it using ʻencode () | etc. --Since the return value of http.client.HTTPResponse # read () that gets the response result is also of bytes type, use decode () etc. to convert it to str. -- json.dupms () will convert a Python object to a json string (str). There is also a method with a similar name, json.dump (), but this is different. --Similarly, json.loads () and json.load () are different. --ʻ The return value of urllib.request.urlopen () is http.client.HTTPResponse`.