swap_columns_1_2.py

# Requires Python2.7
import matplotlib.pyplot as plt
from matplotlib  import cm
import numpy as np
import sys

# This file swaps columns 1 and 2 within a file.

# Name of file with columns wanting to swap.
filename1 = str(sys.argv[1])
# Name of file outputing to.
filename2 = str(sys.argv[2])
outfile = []
with open(filename1,"r") as f:
	for line in f:
		linesplit = line.split()
		outfile.append(linesplit[1] + " " + linesplit[0] + " " + linesplit[2])

subdccmfile = open(filename2,"w")
for i in outfile:
	subdccmfile.write(i+"\n")