Insert image to a List box

[Matt McCredie]

On Nov 15, 2007 2:15 PM, linda. s <samrobertsmith at gmail.com> wrote:
>
> On 11/15/07, Matimus <mccredie at gmail.com> wrote:
> > On Nov 15, 12:45 pm, linda.s <samrobertsm... at gmail.com> wrote:
> > > I run the following code and got the error (I put a .gif file on the desktop)
> > > Traceback (most recent call last):
> > >   File "11.py", line 25, in <module>
> > >     for gifname in os.listdir(dirpath):
> > > OSError: [Errno 2] No such file or directory: '.\\Desktop\\'
> > >
> > > import os
> > > import Tkinter
> > >
> > > root = Tkinter.Tk()
> > > L = Tkinter.Listbox(selectmode=Tkinter.SINGLE)
> > > gifsdict = {}
> > >
> > > dirpath = '.\\Desktop\\'
> > > for gifname in os.listdir(dirpath):
> > >     if not gifname[0].isdigit():
> > >        continue
> > >     gifpath = os.path.join(dirpath, gifname)
> > >     gif = Tkinter.PhotoImage(file=gifpath)
> > >     gifsdict[gifname] = gif
> > >     L.insert(Tkinter.END, gifname)
> > >
> > > L.pack()
> > > img = Tkinter.Label()
> > > img.pack()
> > > def list_entry_clicked(*ignore):
> > >     imgname = L.get(L.curselection()[0])
> > > img.config(image=gifsdict[imgname])
> > > L.bind('<ButtonRelease-1>', list_entry_clicked)
> > > root.mainloop()
> >
> > The exception points to this line as being the issue:
> > > for gifname in os.listdir(dirpath):
> >
> > and the error says `No such file or directory: '.\\Desktop\\''
> >
> > So, there must be no directory named '.\\Desktop\\' in your current
> > working directory. To find out your current working directory use
> > `os.getcwd()'. Make sure that `os.getcwd()' returns the path to a
> > directory with a Desktop folder in it. This is usually something like
> > 'C:\\Documents and Settings\\username'.
> >
>
> In my mac machine,
> I got something like:
> >>> os.getcwd()
> '/Users/linda/Desktop'
>
> So I changed the code like:
> dirpath = '.\Users\linda\Desktop\\'
>
> But I still got the error:
> ValueError: invalid \x escape
>

Two things. When you type out a path, if you include a '.' in the
front, that means that the path is relative to your current working
directory. So, if your current working directory is
/Users/linda/Desktop, and dirpath is set to './Users/linda/desktop',
then os.listdir(dirpath) is going to search
'/Users/linda/desktop/Users/linda/Desktop', which probably doesn't
exist. You want to use an absolute path just drop the '.'. If you want
to get the files from the current directory, just use a single '.'.
The following two things should work:

dirpath = "." # This always uses the current working directory
dirpath = "/Users/linda/Desktop" # This will always use the same directory

The second thing, which I think is the error you are currently seeing,
is the escape error. In strings in python the backslash is used as an
escape character, if you want to type a single backslash you have to
type two of them '\\' or, for paths (especially on a mac) is is
completely valid to use forward slashes instead. Also, there are raw
strings which don't do escaping. Any of the following will work:

dirpath = "\\Users\\linda\\Desktop"
dirpath = "/Users/linda/Desktop"
dirpath = r"\Users\linda\Desktop" # prepending an 'r' makes it a raw
string (no escaping)


HTH

Matt