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

In this code, you can indicate the path and name of the input/output files, and it will create the final big file in that path:

import os

dir_name = "Your_Desired_Folder/Goes_Here"    #path
input_files_names = ["File1.txt", "File2.txt", "File3.txt"]     #input files
file_name_out = "Big_File.txt"     #choose a name for the output file
file_output = os.path.join(dir_name, file_name_out)
fout = open(file_output, "w")

for tempfile in input_files_names:
    inputfile = os.path.join(dir_name, tempfile)
    fin = open(inputfile, 'r')
    for line in fin:
        fout.write(line)

fin.close()    
fout.close()