why except in python syntax error code example

Example 1: try except python

def sum_of(x, y):
  try:
    print(x + y)
  except TypeError:
    print("Invalid argument specified.")

Example 2: try except python

try: #try to do the following
  print("Hi there")
except: #If what is meant to happen in (try) fails, do this.
  print("A error happened with the code above")