read line

[Arup]

from __future__ import division
import matplotlib.pyplot as plt
import numpy as np
import sys
#import pandas as pd
from pylab import plot, ylim, xlim, show, xlabel, ylabel, grid
from numpy import linspace, loadtxt, ones, convolve
filename= 'contacts.dat'

f = open(filename, "r")
lines = f.readlines()
time=[]
energy =[]
#running_std=[]
for line in lines:
	line = line.strip()
	line = line.split(" ")
	line = [float(i) for i in line if i!=""]
	time.append(int(line[0]))
	energy.append(int(line[1]))
#	running_std.append(np.std(energy))
print(time)
print(energy)

file = open("testfile.dat","w") 

for i in range(len(time)):
    file.write('%d %d\n'%(time[i], energy[i]))

file.close()