python 3.x - how do you open two tkinter Windows one after the other.? -

i new python programming concept of class different of languages java, c++, c# ... , tkinter library. trying basic. first creating frame allow user enter string value; store string value in memory exit frame. creating new file browser allow select specific file rename chosen file string stored in memory earlier. not have specific snippet of code have 2 pieces of codes combined give me result want.

enter code here # snippet input user def printtext():     global e     string = e.get()      return string     tkinter import * root = tk()  root.title('name')  e = entry(root) e.pack() e.focus_set()  b = button(root,text='okay',command=printtext)  b.pack(side='bottom')  root.mainloop()  # file browser  import tkinter,tkfiledialog  root = tkinter.tk() file = tkfiledialog.askopenfile(parent=root,mode='rb',title='choose file') 

why don't try asksaveasfilename in example.but if want use file_path=askopenfilename entry, have use os library, function os.rename (i think) .this code written in python 3 if using python2 change names of libraries.

from tkinter import * import tkinter.filedialog fd  def main():      root = tk()     root.title('name')     #e = entry(root)     #e.pack()      #e.focus_set()     b = button(root,text='okay',command= lambda:printtext(e))         b.pack(side='bottom')      root.mainloop()  def printtext(e):     #string = e.get()      #print(string)     file = fd.asksaveasfile(title='choose file')     #print(file)  main()