Merges n text files into a single csv, ignoring the headers in all but the first text file.

csv_concat.py

import glob

interesting_files = glob.glob("*.txt") 

header_saved = False
with open('output.csv','w') as fout:
    for filename in interesting_files:
        with open(filename) as fin:
            header = next(fin)
            if not header_saved:
                fout.write(header)
                header_saved = True
            for line in fin:
                fout.write(line)