I have a program – written in Python 2.7.3 and wxPython 2.9.4.0 – that uses Python’s urllib2.urlopen() function/method. The purpose of my program is to count the occurence of a user-given word that exists on a user-given website. So if I want to know how many times the word “library” occurs on “wxpython.org”, I type in the URL box “http://www.wxpython.org” (without quotes), and in the word box I type “library” (without quotes).
My problem is that the user needs to be exact at inputting the URL, because “wxpython.org” is not enough; it has to be inputted exactly as “http://www.wxpython.org”, which is rather annoying for the user.
Is there a way the URL be inputted only as “wxpython.org” and urllib2.urlopen’s function/method filling in the missing “http://www.” part? Or is there any other way like checking for the “http://www.” part and prepend it if not present? What is the best way to solve my issue and how exactly should I go and implement the solution?
There is, and that's probably why it is your homework
assignment. You need to read up on string handling.
Karsten
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On Mon, Oct 29, 2012 at 09:14:56PM +0100, Boštjan Mejak wrote:
I have a program – written in Python 2.7.3 and wxPython 2.9.4.0 – that uses
Python's urllib2.urlopen() function/method. The purpose of my program is to
count the occurence of a user-given word that exists on a user-given
website. So if I want to know how many times the word "library" occurs on "
wxpython.org", I type in the URL box "http://www.wxpython.org" (without
quotes), and in the word box I type "library" (without quotes).
My problem is that the user needs to be exact at inputting the URL, because
"wxpython.org" is not enough; it has to be inputted exactly as " http://www.wxpython.org <http://www.python.org>", which is rather annoying
for the user.
Is there a way the URL be inputted only as "wxpython.org" and
urllib2.urlopen's function/method filling in the missing "http://www."
part? Or is there any other way like checking for the "http://www." part
and prepend it if not present? What is the best way to solve my issue and
how exactly should I go and implement the solution?
The part is really required.� The latest round of browsers
is making people lazy, because they fill that in if it’s not
provided.� I still find myself typing it by hand.� It’s not hard to
detect this, however.� Remember that there are a lot of protocols
available for URLs.� There’s no reason for urllib to assume that you
meant “http”.� If your program knows that is the default,
then it’s up to you to provide it.
The “www” part is different.� That’s not universal.� You should be
able to fetch and have it work just fine.� You
might get a “redirect” response telling you to fetch
instead, but that’s something you need to be
handling.
···
Bo�tjan Mejak wrote:
My problem is that the user needs to be exact at inputting
the URL, because "wxpython.org "
is not enough; it has to be inputted exactly as "http://www.wxpython.org ", which is rather
annoying for the user.
