KnowCardPython · OOP: Classes & Inheritance
What does the @ operator do in Python, and since which version has it existed?
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More in OOP: Classes & Inheritance
In a class, what must the first parameter of every (instance) method be, and what is passed into it?
What happens when you run this?
```
class Account:
def show():
print("hi")
Account().show()
```
Where should a class's instance attributes be created, and with what syntax?
Is __init__ a constructor in the strict sense, and what does it return?
What does this print?
```
class C:
def __init__(self):
print("init")
x = C()
```
How does Python clean up an instance at the end of its life — is there a guaranteed destructor?
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