Date Variables and URL Parameters

[snippsat]

You most explain better and show some data.
Is DATE that you mention a Python datetime object?
It's not hard to convert a date back and forth.

>>> from datetime import datetime
>>> 
>>> dt = datetime.now()
>>> # It's now a datetime object
>>> dt
datetime.datetime(2018, 11, 6, 19, 27, 40, 618447)
>>> type(dt)
<class 'datetime.datetime'>
>>> 
>>> # To string
>>> date_string = dt.strftime('%B %d, %Y')
>>> date_string
'November 06, 2018'
>>> 
>>> # f-string 3.6 -->
>>> date_string = f'{dt:%B %d, %Y}'
>>> date_string
'November 06, 2018' 

QUESTION IS:HOW do I accept a simple date into a program, then turn around and feed that date into a long URL string with ONE parameter being that date?

It dependents on what server will take in as data,can construct a url with a date parameter.
Often can use Requests with POST parameter to server(has often a API).
Eg:

from datetime import datetime
import requests

dt = datetime.now()
date_string = f'{dt:%B %d, %Y}'
payload = {'user_name': 'admin', 'date': date_string}
r = requests.post("http://httpbin.org/post", json=payload)
print(r.text)
json_data = r.json()
print(json_data['json']['date'])

Output:
{
  "args": {}, 
  "data": "{\"user_name\": \"admin\", \"date\": \"November 06, 2018\"}", 
  "files": {}, 
  "form": {}, 
  "headers": {
    "Accept": "*/*", 
    "Accept-Encoding": "gzip, deflate", 
    "Connection": "close", 
    "Content-Length": "51", 
    "Content-Type": "application/json", 
    "Host": "httpbin.org", 
    "User-Agent": "python-requests/2.19.1"
  }, 
  "json": {
    "date": "November 06, 2018", 
    "user_name": "admin"
  }, 
  "origin": "46.246.118.243", 
  "url": "http://httpbin.org/post"
}

November 06, 2018