filedialog, tkinter and opening files

The exception you get is telling you filedialog is not in your namespace.filedialog (and btw messagebox) is a tkinter module, so it is not imported just with from tkinter import *

>>> from tkinter import *>>> filedialogTraceback (most recent call last):  File "<interactive input>", line 1, in <module>NameError: name 'filedialog' is not defined>>> 

you should use for example:

>>> from tkinter import filedialog>>> filedialog<module 'tkinter.filedialog' from 'C:\Python32\lib\tkinter\filedialog.py'>>>>

or

>>> import tkinter.filedialog as fdialog

or

>>> from tkinter.filedialog import askopenfilename

So this would do for your browse button:

from tkinter import *from tkinter.filedialog import askopenfilenamefrom tkinter.messagebox import showerrorclass MyFrame(Frame):    def __init__(self):        Frame.__init__(self)        self.master.title("Example")        self.master.rowconfigure(5, weight=1)        self.master.columnconfigure(5, weight=1)        self.grid(sticky=W+E+N+S)        self.button = Button(self, text="Browse", command=self.load_file, width=10)        self.button.grid(row=1, column=0, sticky=W)    def load_file(self):        fname = askopenfilename(filetypes=(("Template files", "*.tplate"),                                           ("HTML files", "*.html;*.htm"),                                           ("All files", "*.*") ))        if fname:            try:                print("""here it comes: self.settings["template"].set(fname)""")            except:                     # <- naked except is a bad idea                showerror("Open Source File", "Failed to read file\n'%s'" % fname)            returnif __name__ == "__main__":    MyFrame().mainloop()

I had to specify individual commands first and then use the * to bring all in command.

from tkinter import filedialogfrom tkinter import *

Did you try adding the self prefix to the fileName and replacing the method above the Button ? With the self, it becomes visible between methods.

...def load_file(self):    self.fileName = filedialog.askopenfilename(filetypes = (("Template files", "*.tplate")                                                     ,("HTML files", "*.html;*.htm")                                                     ,("All files", "*.*") ))...