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Puzzle 7: Explanation

Let’s learn about how attributes work in Python.

We'll cover the following...

Try it yourself

Try executing the code below to verify the result:

Python 3.8
next_uid = 1
class User:
  def __init__(self, name):
    global next_uid
    self.name = name
    self.__id = next_uid
    next_uid += 1
    
u = User('daffy') 
print(f'name={u.name}, id={u.__id}')

Explanation

Unlike other languages, Python does not have private and protected attributes. By convention, if we prefix our attributes or variables with an underscore, like this _, the attributes are considered ...