Whats missing?

[Michael P. Reilly]

Daniel Faulkner <m01ymu00 at cwcom.net> wrote:
: I was just messing about and found out that if I made some thing like
: this it would not work but if I did it by typing at the python prompt

: from urllib import urlopen
: Data = urlopen("http://www.python.org/").read()
: print Data

: It would work but why is this?

: from Tkinter import *
: from urllib import urlopen

: class HTMLBrowser(Frame):
:     def Create_Widgets(self):
:         # frames
:         butFrame = Frame()
:         butFrame.pack(side='top')
:         # normal widgets
:         self.QuitB = Button(butFrame, text='Quit', fg='red',
: command=self.quit)
:         self.UrlEnt = Entry(self, relief=SUNKEN)
:         self.source_box = Text(self)
:         self.startB = Button(butFrame, text='Start',
: command=self.UrlGeting)
:         # Pack it
:         self.QuitB.pack(side='left')
:         self.startB.pack(side='left')
:         self.UrlEnt.pack(side='top', fill='x')
:         self.source_box.pack(side='bottom')
:     def lets_see_it(self):
:         self.source_box.insert('0.0', self.Data)
:     def UrlGeting(self):
:         UrlCurr = self.UrlEnt.get()
:         Data = urlopen('"' + UrlCurr + '"').read()

Off-hand, I would say it is the quoting here.

This statement is adding double quotes to the URL.  UrlCurr is already
a string, you do not need to enclose it in quotes.

  urlopen("http://www.python.org/spam").read()
is the same as:
  url = "http://www.python.org/spam"
  urlopen(url).read()

The statement above is attempting to call:
  urlopen("\"http://www.python.org/spam\"").read()

:         self.source_box.insert('0.0', Data)
:     def __init__(self, master=None):
:         Frame.__init__(self, master)
:         self.pack()
:         self.Create_Widgets()

: # Test
: Dat = urlopen("http://www.python.org/")
: # print Dat

: Browser = HTMLBrowser()
: Browser.mainloop()