tkinter open file dialog

最簡易範例，不實用：

import tkinter as tk
from tkinter import filedialog

root = tk.Tk()
root.withdraw()
file_path = filedialog.askopenfilename()
print(file_path)

實用的簡易範例：

import tkinter as tk
from tkinter import ttk
from tkinter import filedialog as fd
from tkinter.messagebox import showinfo

# create the root window
root = tk.Tk()
root.title('Tkinter Open File Dialog')
root.resizable(False, False)
root.geometry('300x150')


def select_file():
    filetypes = (
        ('text files', '*.txt'),
        ('All files', '*.*')
    )

    filename = fd.askopenfilename(
        title='Open a file',
        initialdir='/',
        filetypes=filetypes)

    showinfo(
        title='Selected File',
        message=filename
    )


# open button
open_button = ttk.Button(
    root,
    text='Open a File',
    command=select_file
)

open_button.pack(expand=True)


# run the application
root.mainloop()

多選範例：

import tkinter as tk
from tkinter import ttk
from tkinter import filedialog as fd
from tkinter.messagebox import showinfo

# create the root window
root = tk.Tk()
root.title('Tkinter File Dialog')
root.resizable(False, False)
root.geometry('300x150')


def select_files():
    filetypes = (
        ('text files', '*.txt'),
        ('All files', '*.*')
    )

    filenames = fd.askopenfilenames(
        title='Open files',
        initialdir='/',
        filetypes=filetypes)

    showinfo(
        title='Selected Files',
        message=filenames
    )


# open button
open_button = ttk.Button(
    root,
    text='Open Files',
    command=select_files
)

open_button.pack(expand=True)

root.mainloop()

the askopenfiles() function shows a file dialog and returns file objects of the selected files:

f = fd.askopenfiles()