Update's reddit's headers to the current year

updateredditheaders.py

import os
from datetime import datetime
skipped_endings = ['.so', '.pyc', '.ico', '.png', '.jpg', '.jpeg', '.gif', '.o']
skipped_files = [
    'r2/r2/public/static/inbound-email-policy.html' # when this file gets run through, something happens to it's endings, I don't know legal validity stuff.
]
current_year_digits = int(str(datetime.now().year)[2:])
file_list = []
for walker in os.walk('reddit'):
    if walker[2]:
        for file in walker[2]:
            file_list.append(os.path.join(walker[0], file))
    else:
        file_list.append(walker[0])
file_list = [f for f in file_list if os.path.isfile(f) and ('.git/' not in f)]
for filename in file_list:
    if any(filename.endswith(ending) for ending in skipped_endings):
        continue
    if any(filename.endswith(skipped) for skipped in skipped_files):
        continue
    file = open(filename, 'r')
    print(filename)
    data = file.read()
    for i in range(6, current_year_digits):
        data = data.replace(
            "All portions of the code written by reddit are Copyright (c) 2006-20{0}".format(i),
            "All portions of the code written by reddit are Copyright (c) 2006-20{0}".format(current_year_digits)
        )
        data = data.replace(
            "Attribution Copyright Notice: Copyright (c) 2006-20{0} reddit Inc. All Rights".format(i),
            "Attribution Copyright Notice: Copyright (c) 2006-20{0} reddit Inc. All Rights".format(current_year_digits)
        )
    file.close()
    file = open(filename, 'w')
    file.write(data)
    file.close()