Python-сообщество

a.readlines()[5]

# or

for i, line in enumerate(a.readlines()):
    if i == 5:
        break

import os
a = os.popen("netstat -e")
for line in a.readlines():
    
        print line

import os

def ParseW(Str):
    prevCh = ''
    words = ['']
    inQuote = False
   
    for Ch in Str:
        if(Ch==' ') and (prevCh!='\\') and (not inQuote):
            if(len(words[len(words)-1])!=0):
                words.append('')
        else:
            if(Ch=='"') and (prevCh!='\\') and (not inQuote):
                if(len(words[len(words)-1])!=0):
                    words.append('')
                words[len(words)-1] += Ch
                inQuote = True
            elif(Ch=='"') and (prevCh!='\\') and (inQuote):
                words[len(words)-1] += Ch
                words.append('')
                inQuote = False
            else:
                words[len(words)-1] += Ch
        prevCh = Ch

    if(len(words[-1:][0])==0):
        words.pop()
    
    return words

a = os.popen("netstat -e ")
for i, line in enumerate(a.readlines()):
    f=ParseW(line)
    if i==5:
        break
      
        
    
        
    print f[1:-1]

#coding: cp1251
from re import compile as re_compile
from subprocess import Popen, PIPE

SPACE_CUTTER = re_compile('\s{2,}')

def reap_data(cmd_out):
    return dict(map(lambda a: (a[0], (int(a[1]), int(a[2]))),\
                    filter(lambda a: len(a)==3,\
                           map(SPACE_CUTTER.split,\
                               filter(lambda a: a,\
                                      map(lambda a: a.strip(),\
                                          cmd_out.split('\r\n')))))))

def exec_cmd(cmd_line):
    process = Popen(cmd_line.split(), shell=False, stdout=PIPE)
    stdout, stderr = process.communicate()
    return stdout.decode('cp866') 

out = exec_cmd('netstat -e')
info = reap_data(out)
sent, got = info[u'Байт']
print sent, got

#coding: cp1251
from re import compile as re_compile
from subprocess import Popen, PIPE
from Tkinter import *
import string

SPACE_CUTTER = re_compile('\s{2,}')

spisok1=[1,1,1,1]


def reap_data(cmd_out):
    return dict(map(lambda a: (a[0], (int(a[1]), int(a[2]))),\
                    filter(lambda a: len(a)==3,\
                           map(SPACE_CUTTER.split,\
                               filter(lambda a: a,\
                                      map(lambda a: a.strip(),\
                                          cmd_out.split('\r\n')))))))

def exec_cmd(cmd_line):
    process = Popen(cmd_line.split(), shell=True, stdout=PIPE)
    stdout, stderr = process.communicate()
    return stdout.decode('cp866') 

def reader():
    global label
    while 1:
        try:
            out = exec_cmd('netstat -e')
            info = reap_data(out)
            sent, got = info[u'Байт']
            kb = sent/1024
            
            break
        except:
            continue

    curtime = kb
    a=int(spisok1[-1])
    b=int(spisok1[-2])
    spisok1.append(curtime)
    curtime=a-b
    speed=divmod(curtime, 1024)
    del spisok1[0]
    def cen(rub):
        return "%i MB. %i KB." % (rub)

    
    label["text"]="Speed: %s" %(cen (speed))
    root.after(1000, reader)
    
    
root=Tk()
label=Label(root, text="******:")
label.pack(anchor=W)
reader()
root.title("Monitor Trafik")
root.mainloop()