Monobank api usage

from collections import defaultdict
import requests
import typing as t
import time
from datetime import datetime, date


MONO_ENDPOINT = "https://api.monobank.ua/"
MY_TOKEN = "some_very_secret_token"
INVOICE_PATH = "/personal/statement/0/{from_ts}"
MSS_DICT = {
    5411: "🛒  Groceries and supermarkets",
    5814: "🌯  Fast food restaurants",
    4829: "💸 (🏠 ) Wire transfers and money orders",
    5812: "🍽  Eating places and restaurants",
    5912: "💊  Drug stores and pharmacies",
    4121: "🚕  Taxi-cabs and limousines",
    5977: "💄  Cosmetic shops",
    5192: "📚  Books, periodicals and newspapers",
    5499: "🍌  Miscellaneous food shops",
    6536: "🏧  Privat24",
    7991: "🎭  Tourist attractions and exhibits",
    5651: "👕  Family clothing shops",
    7999: "🎢  Recreation services",
    8099: "⚕️  Medical services and health practitioners",
    7929: "🗞  Bands, orchestras and miscellaneous entertainers",
}


def get_currency() -> t.List[dict]:
    currency_endpoint = '/bank/currency'
    currency_resp = requests.get(MONO_ENDPOINT + currency_endpoint).json()
    return currency_resp


def get_timestamp_this_month() -> int:
    first_day_in_current_time = str(date.today().replace(day=1))
    ts_current_month = time.mktime(
        datetime.strptime(first_day_in_current_time, "%Y-%m-%d").timetuple()
    )
    return int(ts_current_month)


def get_invoice() -> t.List[dict]:
    ts = get_timestamp_this_month()
    response = requests.get(
        MONO_ENDPOINT + INVOICE_PATH.format(from_ts=ts),
        headers={"X-Token": MY_TOKEN},
    )
    return response.json()


def get_flow(invoice: t.List[dict]) -> float:
    amount = sum(
        [
            i.get("amount")
            for i in invoice
            if i.get("description") != 'Виплата депозиту'
        ]
    )
    return amount/100


def get_flow_by_type(
    invoice: t.List[dict],
    group_by: t.Optional[str] = "mcc",
):
    dd = defaultdict(float)
    for i in invoice:
        if i.get("description") != 'Виплата депозиту':
            dd[i.get(group_by)] += round(float(i.get("amount")/100),2)
    return dd


invoice = get_invoice()
flow = get_flow(invoice)
print(f"Витрати за цей місяць: {flow}")
flow_by_mcc = get_flow_by_type(invoice)
print(f'Витрати по mcc:')
for k, v in flow_by_mcc.items():
    print(f'{MSS_DICT.get(k)}: {v}')