can anyone help me to understand this code and the concept behind this

Question

def decor(func):
def wrap():
print("============")
func()
print("============")
return wrap

def print_text():
print("Hello world!")

decorated = decor(print_text)
decorated()

Answer 1

decor(func) is a function... that takes a function as a parameter. You can also reference a function without calling it by omitting the "()" after the function name.

All decor does is:
1.print some equal signs,
2.call the function given as a parameter (using "()"),
3.print some more equal signs.

when you look at the function print_text(), it just prints Hello World. So when plugged in to the above function it goes:
1.print equal signs,
2.print Hello World,
3.print more equal signs