strip.py

#!/usr/bin/env python3
# vim: set expandtab tabstop=4 shiftwidth=4:

import os
import re
import sys

date_re = re.compile('^\d+:\d+:\d+\.\d+: (?P<rest>.*)$')
pid_re = re.compile('^(?P<app>[-a-zA-Z0-9]+)\[(?P<pid>\d+)\]: (?P<rest>.*)$')

os.makedirs('stripped', exist_ok=True)
for filename in os.listdir('.'):
    if filename.startswith('slr-') and filename.endswith('.log'):
        new_filename = os.path.join('stripped', filename)
        with open(filename) as df:
            with open(new_filename, 'w') as odf:
                for line in df:
                    line = line.strip()
                    if match := date_re.match(line):
                        line = match.group('rest')
                    line = pid_re.sub('\g<app>[]: \g<rest>', line)
                    print(line, file=odf)
        print(f'Stripped to: {new_filename}')