glob, sorting file names wrt. time

Find files using Unix-like pattern:

#!/usr/bin/env python

import glob, os

YEAR = "2019"

def main():
    files = glob.glob( 'Meeting%s*.tex' % YEAR)
    files.sort(key=os.path.getmtime)
    for f in files: 
        os.system( "cat %s >> Meetings%s.tex" % (f, YEAR))
    return

if __name__ == "__main__":
    main()