CODEWITHSUNDEEP
pythontkinter
José M.
José M.

Reputation: 623

Can't use any filetype I try with Tkinter filedialog "filetype"

So, I have this snippet of code:

def savefileas(self):
       filename = "hello.json" #Do interface
       f = tk.filedialog.asksaveasfilename(filetypes=("All files", "*."))
       if f is None: # asksaveasfile return `None` if dialog closed with "cancel".
           return
       f.close()

but, every time I try to run it, whatever i put on "filetype" (I've tried "json", ".json", "All files", "." and some others I've seen in examples around the web), it keeps returning with the same error on those lines:

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\Tibers\AppData\Local\Programs\Python\Python37-32\lib\tkinter\__init__.py", line 1702, in __call__
    return self.func(*args)
  File "d:\Users\Tibers\Documents\GitHub\improved-broccoli\main.py", line 84, in savefileas
    f = tk.filedialog.asksaveasfilename(filetypes=("All files", "*."))
  File "C:\Users\Tibers\AppData\Local\Programs\Python\Python37-32\lib\tkinter\filedialog.py", line 380, in asksaveasfilename
    return SaveAs(**options).show()
  File "C:\Users\Tibers\AppData\Local\Programs\Python\Python37-32\lib\tkinter\commondialog.py", line 43, in show
    s = w.tk.call(self.command, *w._options(self.options))
_tkinter.TclError: bad file type "*.", should be "typeName {extension ?extensions ...?} ?{macType ?macTypes ...?}?"

Why is that? and what do I need to do to fix it? (Preferably, I'd save the files as .json)

Upvotes: 0

Views: 3394

Answers (2)

fhdrsdg
fhdrsdg

Reputation: 10592

From effbot:

filetypes

list

Sequence of (label, pattern) tuples. The same label may occur with several patterns. Use “*” as the pattern to indicate all files.

So filetypes should be a list of tuples of the form (label, pattern). Right now you give it just one tuple, not a list of tuples. You can make it a list of one tuple or a list of multiple tuples, with the first being the default option.

So change the one tuple

f = tk.filedialog.asksaveasfilename(filetypes=("All files", "*."))

to a list of tuples like

f = tk.filedialog.asksaveasfilename(filetypes=[("All files", "*.*")])

or to have Json instead of all files like

f = filedialog.asksaveasfilename(filetypes=[("Json", '*.json')])

or add all files as a second option with Json being the default like

f = filedialog.asksaveasfilename(filetypes=[("Json", '*.json'), ("All files", "*.*")])

Upvotes: 3

jhomr
jhomr

Reputation: 487

As indicated in my comment, I'm pretty sure your issue is simply with formatting.

f = tk.filedialog.asksaveasfilename(filetypes=("All files", "*."))

Should be

f = tk.filedialog.asksaveasfilename(filetypes=("json", "*.json"))

Or

f = tk.filedialog.asksaveasfilename(filetypes=("All files", "*.*"))
# I'm not sure you can do this one with asksaveasfilename though

Where "All files" and "json" are just labels

Upvotes: 0

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