working_too_much.py

import os
from datetime import datetime, timedelta
import slack
import holidays

SLACK_TOKEN = os.environ.get('SLACK_TOKEN')
SLACK_USER = os.environ.get('SLACK_USER')

from_date = datetime.strptime('2019-01-01', '%Y-%m-%d')
to_date = datetime.strptime('2019-06-18', '%Y-%m-%d')
rj_holidays = holidays.Brazil(state='RJ')

def is_non_working_day(day):
    return day.weekday() >= 5 or day in rj_holidays

ranges = []
cur_range = None
for n in range((to_date - from_date).days):
    day = from_date + timedelta(days=n)
    if is_non_working_day(day):
        if cur_range is None:
            cur_range = [day, day]
        else:
            cur_range[1] = day
    elif cur_range is not None:
        ranges.append(cur_range)
        cur_range = None


client = slack.WebClient(token=SLACK_TOKEN)
for cur_range in ranges:
    query = 'from:@{} after:{} before:{}'.format(
        SLACK_USER,
        (cur_range[0] + timedelta(days=-1)).strftime('%Y-%m-%d'),
        (cur_range[1] + timedelta(days=1)).strftime('%Y-%m-%d'),
    )
    result = client.search_messages(query=query)
    msgs_count = result.data.get('messages', {}).get('total')
    if msgs_count > 0:
        print("activity found on {} - {}: {} msgs".format(cur_range[0].strftime('%Y-%m-%d'), cur_range[1].strftime('%Y-%m-%d'), msgs_count))