Tkinter Button Klick und Parameterübergabe

    def selPic():
        global file
        file = askopenfilename(filetypes=(('JPEG Picture', '*.jpg'),  
                                               ('PNG Picture', '*.png'),  
                                               ('All Files', '*.*')))  
        if sys.platform == "win32":  
            Label(upload, font='bold', text=str(file).split('/').pop()).grid(row=0, column=1)  

            # Label(upload, text=file).grid(row=0, column=1)
            print("filename:", str(file).split('/').pop())  
            print('Path:', file)  

        else:
            Label(upload, text=str(file).split('\\').pop()).grid(row=0, column=1)  

    def resizePic(img_name, img_path):
        print(file.get())
        #if len(e_img_name.get()) == 0:
        #    Label(upload, text="Filename", bg="red").grid(row=1) 
        Picture.resize(None, img_name, img_path)

        #else:
         #   pass



    upload = Tk()
    upload.focus_force()
    upload.title("Upload Picture")  
    # Labels
    Label(upload, text="Choose a picture to upload").grid(row=0)  
    Label(upload, text="Filename").grid(row=1)  
    Label(upload, text="Password").grid(row=2)  
    # Entries
    img_name = StringVar(value="Test")  
    file = StringVar()
    #e_path = Entry(upload, textvariable=file)
    e_img_name = Entry(upload, textvariable=img_name)
    e_pass = Entry(upload, show='*')  
    # Buttons
    Button(upload, text="Select", command=selPic).grid(row=0, column=2, sticky=W, pady=4)  
    Button(upload, text="Resize", command=lambda: resizePic(e_img_name.get(), file.get)).grid(  
        row=1, column=2, sticky=W, pady=4)

    # Place entries
    #e_path.grid(row=0, column=1)
    e_img_name.grid(row=1, column=1)
    e_pass.grid(row=2, column=1)

    mainloop()