Here's an example I just made:
#-----begin------
from Tkinter import * #part of standard library
def reverse():
s=entrybox.get() #get text from entry widget entrybox.delete(0,END) #delete text from entry widget entrybox.insert(0,s[::-1]) #reverse text, insert it
entrybox=Entry(root) #create an entry widget
entrybox.pack() #display it in the window
button1=Button(root, text='Press Me', command=reverse)
button1.pack()
entrybox.insert(0,'type here') #add a default value
root.mainloop()
Here's an example I just made:
#-----begin------
from Tkinter import * #part of standard library
def reverse():
root=Tk() #create a windowentrybox=Entry(root) #create an entry widget
entrybox.pack() #display it in the window
button1=Button(root, text='Press Me', command=reverse)
button1.pack()
entrybox.insert(0,'type here') #add a default value
root.mainloop()