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Newsgroups: comp.lang.python
Date: Wed, 19 Sep 2012 01:50:47 -0700 (PDT)
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Subject: Re: using text file to get ip address from hostname
From: Dan Katorza <dkatorza@gmail.com>
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Xref: csiph.com comp.lang.python:29472

=D7=91=D7=AA=D7=90=D7=A8=D7=99=D7=9A =D7=99=D7=95=D7=9D =D7=A8=D7=91=D7=99=
=D7=A2=D7=99, 19 =D7=91=D7=A1=D7=A4=D7=98=D7=9E=D7=91=D7=A8 2012 11:14:29 U=
TC+3, =D7=9E=D7=90=D7=AA Chris Angelico:
> On Wed, Sep 19, 2012 at 5:41 PM, Dan Katorza <dkatorza@gmail.com> wrote:
>=20
> >
>=20
> > Hello again,
>=20
> > I have another question and i hope you will understand me..
>=20
> > Is there any option where you can set the program to go back to lets sa=
y the top of the code?
>=20
> > I mean if the program finished the operation and i want to stay in the =
program and go back ro the start.
>=20
> > after any operation i want the option to do it again , go back to the m=
ain menu or full exit from the program, and i want it every time.
>=20
> >
>=20
> > i hope i'm clear :)
>=20
>=20
>=20
> Yep! Look up the docs and tutorial on "control flow" and "looping
>=20
> constructs". Sounds like what you want here is a 'while' loop.
>=20
>=20
>=20
> ChrisA

Hi Chris,
this is my code:

#!/usr/bin/env python
#Get the IP Address

import sys, socket

print ("\n\n#########################################################")
print ("#                Get IP from Host v 1.0                 #")
print ("#########################################################")
print ("#             Choose from the options below             #")
print ("#          1- url , 2-File(Text file only.txt)          #")
print ("#########################################################\n")

mchoice =3D int(raw_input("Please enter your choice> "))
while mchoice !=3D1 and  mchoice !=3D2:
    print("{0} is not a menu option.".format(mchoice))
    mchoice =3D int(raw_input("Please try again> "))


if mchoice =3D=3D 2:
  filename =3D raw_input("Hello, please enter file name here> ")
  if filename.endswith(".txt"):

   try:
    infile =3D open(filename)
   except EnvironmentError as e:
    print(e)
    sys.exit(1)

   print("\nFile {0} exists!".format(filename))
   print("\nGetting IP addresses for hosts")
   print("\n")
  else:
       print("{0} is not a Text file.".format(filename))
       sys.exit(1)
  for line in infile:
    hostname =3D line.strip()
    try:
        ip_address =3D socket.gethostbyname(hostname)
    except EnvironmentError as e:
        print("Couldn't find IP address for {0}: {1}".format(hostname, e))
        continue
    print("IP address for {0} is {1}.".format(hostname, ip_address))
  else:
    print ("\nFinished the operation")

if mchoice =3D=3D 1:
  murl =3D raw_input("Enter URL here> ")
  try:
      print("Checking URL...")
      ip_address =3D socket.gethostbyname(murl)
  except EnvironmentError as d:
      print(d)
      sys.exit(1)
  print("Valid URL")
  print("\nIP address for {0} is {1}.".format(murl, ip_address))
  print ("\nFinished the operation")
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

now where it says Finsihed the operation i want it to show (another search =
/main menu/exit program)

i know about the while loop , but forgive me i just don't have a clue how t=
o use it for this situation.

i don't want you to give me the code:) just the idea.
i did read the section about the while loop but still i do not know how to =
use it in this situation.
thanks.