what is the purpose of super keyword in python

1class Parent:
2  def __init__(self, txt):
3    self.message = txt
4
5  def printmessage(self):
6    print(self.message)
7
8class Child(Parent):
9  def __init__(self, txt):
10    super().__init__(txt)
11
12x = Child("Hello, and welcome!")
13
14x.printmessage()