Python tk() error

Question

i tired python Gui. Since I'm on Python 3.7.4, tkinter must be already installed. and I wrote my first Code.
"""
from tkinter import *

window = tk()
label = label(window, text = 'hello world!').pack()
window.mainloop()
"""
but I'm getting this error
"""
NameError: name 'tk' is not defined
"""
Please help how to resolve...

Answer 1

window = Tk()

The name of the class is Tk, not tk. Also the label class, it's supposed to be Label.