what does super().__init__() do in python code example

Example 1: python super init

class test:
  def __init__(self, *args):
    print(f"called test with: {args}")

class testing(test):
  def __init__(self, *args):
    print(f"Called testing with: {args}")
    super().__init__(*args)
        
testing("hmm")
# super is a keyword that calls the parent class

Example 2: python super

# It's kinda hard to explain this just by code.
# So I'll provide a link to a pretty good explanation of it.
https://www.pythonforbeginners.com/super/working-python-super-function

Example 3: python super

class Square(Rectangle):
    def __init__(self, length):
        super().__init__(length, length)

Example 4: what is the purpose of super keyword in python

class Parent:
  def __init__(self, txt):
    self.message = txt

  def printmessage(self):
    print(self.message)

class Child(Parent):
  def __init__(self, txt):
    super().__init__(txt)

x = Child("Hello, and welcome!")

x.printmessage()