Python append multiple files in given order to one big file

Question

I have up to 8 seperate Python processes creating temp files in a shared folder. Then I\'d like the controlling process to append all the temp files in a certain order into

Answer 1

Use fileinput:

with open("bigfile.txt", "w") as big_file:
    with fileinput.input(files=tempfiles) as inputs:
        for line in inputs:
            big_file.write(line)

This is more memory efficient than @RafeKettler's answer as it doesn't need to read the whole file into memory before writing to big_file.