import os
import csv


basedir = "COVID-19/csse_covid_19_data/csse_covid_19_daily_reports_us"

headers = []

for fname in os.listdir(basedir):
    fpath = os.path.join(basedir, fname)
    with open(fpath) as f:
        c = csv.reader(f)
        for row in c:
            headers.append(set(row))
            break


for headerset in headers:
    for other in headers:
        if headerset != other:
            print(headerset)
            print(other)

print("ok")

print(list(headers[0]))