import tkinter

window = tkinter.Tk()
# to rename the title of the window
window.title("GUI")
# pack is used to show the object in the window
label = tkinter.Label(window, text="Hello World!").pack()
window.mainloop()

# error
Traceback (most recent call last):
  File "C:/Users/raphp/PycharmProjects/LearnPython/Intermediate/tkinter.py", line 1, in <module>
    import tkinter
  File "C:\Users\raphp\PycharmProjects\LearnPython\Intermediate\tkinter.py", line 3, in <module>
    window = tkinter.Tk()
AttributeError: module 'tkinter' has no attribute 'Tk'