datausage.py

#!/usr/bin/env python3

from xfinity_usage.xfinity_usage import XfinityUsage
import datetime
import json
import os

results = XfinityUsage(
    os.environ['XFINITY_USER'],
    os.environ['XFINITY_PASSWORD'],
    browser_name='chrome-headless'
).run()

raw = results['raw']

courtesyUsed = raw['courtesyUsed']
courtesyRemaining = raw['courtesyRemaining']
courtesyAllowed = raw['courtesyAllowed']

used = results['used']
total = results['total']
units = results['units']

today = datetime.date.today()
nextMonth = datetime.date(
    today.year + int(today.month == 12),
    today.month % 12 + 1,
    1)
daysRemaining = (nextMonth - today).days
# Be conservative, Comcast says it can take 24 hours for usage be tallied
extrapolatedTotal = used + daysRemaining * (used / (today.day - 0.9))

print('{} of {} {} used this month'.format(used, total, units))
print('{} days remaining'.format(daysRemaining))
print('{:.1f} {} predicted usage'.format(extrapolatedTotal, units))
if extrapolatedTotal > total:
    # Haven't figured out how to get emoji to render in PuTTY
    print("You're not on track :(") # \u2639")
    print('{} of {} courtesy months remaining'.format(courtesyRemaining, courtesyAllowed))
else:
    print("You're on track!") # \U0001F44D")