using text file to get ip address from hostname

[Dan Katorza]

בתאריך יום רביעי, 19 בספטמבר 2012 11:50:56 UTC+3, מאת Dan Katorza:
> בתאריך יום רביעי, 19 בספטמבר 2012 11:14:29 UTC+3, מאת Chris Angelico:
> 
> > On Wed, Sep 19, 2012 at 5:41 PM, Dan Katorza <dkatorza at gmail.com> wrote:
> 
> > 
> 
> > >
> 
> > 
> 
> > > Hello again,
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> > 
> 
> > > I have another question and i hope you will understand me..
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> > 
> 
> > > Is there any option where you can set the program to go back to lets say the top of the code?
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> > 
> 
> > > I mean if the program finished the operation and i want to stay in the program and go back ro the start.
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> > 
> 
> > > after any operation i want the option to do it again , go back to the main menu or full exit from the program, and i want it every time.
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> > 
> 
> > >
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> > 
> 
> > > i hope i'm clear :)
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> > 
> 
> > 
> 
> > 
> 
> > Yep! Look up the docs and tutorial on "control flow" and "looping
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> > 
> 
> > constructs". Sounds like what you want here is a 'while' loop.
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> > 
> 
> > 
> 
> > 
> 
> > ChrisA
> 
> 
> 
> Hi Chris,
> 
> this is my code:
> 
> 
> 
> #!/usr/bin/env python
> 
> #Get the IP Address
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> 
> 
> 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)          #")
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> print ("#########################################################\n")
> 
> 
> 
> mchoice = int(raw_input("Please enter your choice> "))
> 
> while mchoice !=1 and  mchoice !=2:
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>     print("{0} is not a menu option.".format(mchoice))
> 
>     mchoice = int(raw_input("Please try again> "))
> 
> 
> 
> 
> 
> if mchoice == 2:
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>   filename = raw_input("Hello, please enter file name here> ")
> 
>   if filename.endswith(".txt"):
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> 
> 
>    try:
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>     infile = open(filename)
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>    except EnvironmentError as e:
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>     print(e)
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>     sys.exit(1)
> 
> 
> 
>    print("\nFile {0} exists!".format(filename))
> 
>    print("\nGetting IP addresses for hosts")
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>    print("\n")
> 
>   else:
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>        print("{0} is not a Text file.".format(filename))
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>        sys.exit(1)
> 
>   for line in infile:
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>     hostname = line.strip()
> 
>     try:
> 
>         ip_address = socket.gethostbyname(hostname)
> 
>     except EnvironmentError as e:
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>         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:
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>     print ("\nFinished the operation")
> 
> 
> 
> if mchoice == 1:
> 
>   murl = raw_input("Enter URL here> ")
> 
>   try:
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>       print("Checking URL...")
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>       ip_address = socket.gethostbyname(murl)
> 
>   except EnvironmentError as d:
> 
>       print(d)
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>       sys.exit(1)
> 
>   print("Valid URL")
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>   print("\nIP address for {0} is {1}.".format(murl, ip_address))
> 
>   print ("\nFinished the operation")
> 
> =====================================================================
> 
> 
> 
> 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 to 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.

o.k a giant while loop :)
thanks.