Preface
1. Import libraries and modules
2. Write button commands
3. Form initialization and layout
4. function
PrefaceStudy Python in , Always want to make a graphical interface , Looking around , eureka tkinter.
Exercise content ： In the graphical interface , After clicking the button , Use the pop-up dialog box to select a file （ Or folder ）
1. Import libraries and modules
import tkinter as tkfrom tkinter import filedialogHere are some mistakes in the exercise ： In no time 2 When importing statements , Use tk.filedialog after , Prompt error , Show
Cannot find reference ‘filedialog’ in 'init.py
I checked “Lib/tkinter/" Folder , It was found that there was no tkinter.py, But there are filedialog.py
I thought ：tkinter It's the library ,filedialog It's a module ,
But why tk.filedialog Out-of-service ？
Instead, , In the 2 When importing statements , use tk.filedialog and filedialog Fine
Error situation ：
Normal condition ：
def select_file(): # Single file selection selected_file_path = filedialog.askopenfilename() # Use askopenfilename Function to select a single file select_path.set(selected_file_path) def select_files(): # Multiple file selections selected_files_path = filedialog.askopenfilenames() # askopenfilenames Function to select multiple files select_path.set('\n'.join(selected_files_path)) # The paths of multiple files are separated by newline characters def select_folder(): # Folder selection selected_folder = filedialog.askdirectory() # Use askdirectory Function to select a folder select_path.set(selected_folder)Be careful ： Three button commands , Variable select_path Is in the main form Entry The control of textvariable Property value , During form initialization , It needs to be assigned ：
select_path = StringVar()3. Form initialization and layout root = tk.Tk()root.title(" Select a file or folder , Get the path ")# initialization Entry The control of textvariable Property value select_path = tk.StringVar()# Layout control tk.Label(root, text=" File path ：").grid(column=0, row=0, rowspan=3)tk.Entry(root, textvariable = select_path).grid(column=1, row=0, rowspan=3)tk.Button(root, text=" Select a single file ", command=select_file).grid(row=0, column=2)tk.Button(root, text=" Select multiple files ", command=select_files).grid(row=1, column=2)tk.Button(root, text=" Select the folder ", command=select_folder).grid(row=2, column=2)root.mainloop()4. function 
When a single file is selected
This is about python Use tkinter This is the end of the module's article on file selection , More about python Please search the previous articles of the software development network or continue to browse the relevant articles below. I hope you can support the software development network in the future ！
