MergeScript.py

#Multiple Files Version
#Windows ONLY. line 20 fails on Linux, will look into the cause. 
import os, sys
import argparse

parser = argparse.ArgumentParser(description='Merge numerical data in all the text files within a folder, sort, and then dump into one big text file ')
parser.add_argument('-s','--source directory', help='Folder containing source text files.', required=True)
parser.add_argument('-d','--destination directory', help='Destination directory of operation.', required=True)
parser.add_argument('-st','--starting file', help='Select any data text file within source folder.', required=True)

args = vars(parser.parse_args())

path = args['source directory'] #Source path
output = args['destination directory'] + "/NewFile.txt"

outfile = open (output,"w")
counter = 0

lines = file (args['starting file']).readlines()[1:]
for files in os.listdir(path):
    if (counter == 2):
        lines.sort(key = lambda x: float(x.split()[0]))
        for line in lines:
            outfile.write (line)
        outfile.close()
        Proceed = raw_input ("Check your output file. If you want to proceed, hit Y, otherwise hit N\n")
        if (Proceed == "Y"):
            counter = 0
            outfile = open (output,"w")
            lines += file (str(path) + "/" + str(files)).readlines()[1:]
        elif (Proceed == "N"):
            sys.exit()
    else:
        counter += 1
        lines += file (str(path) + "/" + str(files)).readlines ()[1:]

for line in lines:
    outfile.write(line)
outfile.close()