I hope this will be the last draft :(

leqi_assignment5_draft3.py

import os
import requests
import json

def main():
    members = get_members_data()
    parties = group_members_by_party(members)
    dems = parties[0]
    reps = parties[1]
    #print(json.dumps(reps, indent=4))
    dem_sorted = sort_members(dems)
    rep_sorted = sort_members(reps)
    print_dems = print_members(dem_sorted[0:5])
    print_reps = print_members(rep_sorted[0:5])
    final_print()
    #print(dem_sorted[0:5])
    #print(json.dumps(members, indent=4))

def get_members_data():
    headers = {'X-API-Key': os.environ["PROPUBLICA_API_KEY"] }
    url = "https://api.propublica.org/congress/v1/117/senate/members.json"
    response = requests.get(url, headers=headers)
    data = response.json()
    return data ['results'][0]['members']

def group_members_by_party(members):
    democrat = []
    republican = []
    for member in members:
        if member['party'] == 'D':
            democrat.append(member)
        elif member['party'] == 'R':
            republican.append(member)
    return [democrat, republican]


def sort_members(mems):
    mems = [democrat, republican] #why it can't define democrat and republican? I had already returned [democrat, republican]!!
    for mem in mems:
        sorted(mems, key=itemgetter('votes_against_party_pct'), reverse=True)
    return mems

def print_members(): #I'm always confused, when should I put "names" in parentheses, and on which occasions I don't need to?
    for mem in mems: #Do I need to define mems again? (like row 38)
        print_members = "* {first} {last} ({state}) votes against the party {votes_pct} %of the time."
        print(print_members.format(first = "first_name", last = "last_name", state = "state", votes_pct = "votes_against_party_pct"))
    return

def final_print():
    for mem in mems: #same question as above. my guess is that yes I need to define it (or say, call out what I returned?), but I don't know how...
        print = "Senators most likely to break ranks:\nDemocrat\n--------\n{print_dems}\nRepublican\n----------\n{print_reps}"
        print(print.formet(print_dems = [print_dems], print_reps = [print_reps]))
    return


main()