Pitfall17 - function argument

def check_endpoint_availability(self, host=self.host_endpoint, port=80): # 0.015
  try:
      s = socket.create_connection((host, port), timeout=0.5)
      s.close()
      print(f"The endpoint {host}:{port} is available.")
      return True
  except socket.error as e:
      print(f"The endpoint {host}:{port} is not available. Error: {e}")
      return False

what is the problem:
When you set host=self.host_endpoint as a default value for the host parameter, it is evaluated once at the time of function definition, not each time the function is called. 
If self.host_endpoint changes after the function is defined, it won't reflect the updated value.

To capture the dynamic value of self.host_endpoint when the function is called, you should set the default value to None or some other sentinel value and then check and set the actual value inside the function if needed. 
Here's an updated version of your function:

def check_endpoint_availability(self, host=None, port=80):
    # Check if host is not provided, use self.host_endpoint
    if host is None:
        host = self.host_endpoint

    try:
        s = socket.create_connection((host, port), timeout=0.5)
        s.close()
        print(f"The endpoint {host}:{port} is available.")
        return True
    except socket.error as e:
        print(f"The endpoint {host}:{port} is not available. Error: {e}")
        return False