Tkinter md5 problem

[Dominic]

Dagur Páll Ammendrup wrote:
> Hi!
> 
> In the Introduction to Tkinter I found this method to detect if the 
> contents in a Text widget have changed:
> 
> ---------------------------------------------------
> import md5
>     def getsignature(contents):
>         return md5.md5(contents).digest()
> 
>     text.insert(END, contents) # original contents
>     signature = getsignature(contents)
> 
>     ...
> 
>     contents = text.get(1.0, END)
>     if signature != getsignature(contents):
>         print "contents have changed!"
> 
> ---------------------------------------------------
> 
> This does work, but only if you're using ASCII, otherwise you get a 
> UnicodeError
> 
> UnicodeError: ASCII encoding error: ordinal not in range(128)
> 
> So what can I do?
> Thanks in advance!

I received that error message when I tried
to write tkinter messagebox user input to a
file. You may want to convert the unicode
strings to ASCII:

x=x.encode('iso-8859-15')

Ciao,
  Dominic

P.S. Using cryptographic hash functions to discover gui
      interaction is probably the reason for slow python
      gui applications ;-), probably they have used this
      technique in swing (java) too ;-)))


> 
> -Dagur
>