hello.py

# -*- coding: utf-8 -*-

import os
import json
import urllib
import urllib2
import requests

URL = "https://api.github.com/gists"
#PADDING_SIZE = 1024 # This works
PADDING_SIZE = 2048

def make_body():
    body_dict = {
        "description": "This Is A Test Data For Reproduction. Feel Free to Delete This.",
        "public": False,
        "files": { 
            "hello.md": {
                "content": "Hello\n" * PADDING_SIZE
            }
        }
    }

    return json.dumps(body_dict)


def post_with_urllib2():
    body = make_body()
    body = body
    req = urllib2.Request(URL, data=body)
    req.add_header("Content-Type", "application/json")
    res = urllib2.urlopen(req)
    res_dict = json.load(res)
    return res_dict

def post_with_request():
    body = make_body()
    return requests.post(URL, headers = {'content-type': 'application/json'}, data = body).json()

# Neither works. It throws a httplib.BadStatusLine exception.
#res = post_with_urllib2()
res = post_with_request()

print res["url"]