Scaricare Complete Python Developer In 2020: Zero To Mastery Lezioni «Premium»

say_hi() class CountCalls: def init (self, func): self.func = func self.calls = 0 self._wrapped = func # optional for wraps-like behavior

def add(a, b): return a + b

def __call__(self, *args, **kwargs): self.calls += 1 print(f"Call {self.calls} of {self.func.__name__}") return self.func(*args, **kwargs) @CountCalls def square(x): return x * x say_hi() class CountCalls: def init (self, func): self

@debug def power(base, exp=2): """Raise base to exponent""" return base ** exp say_hi() class CountCalls: def init (self

# DEEP DIVE: Python Decorators (Intermediate to Advanced) def greet(name): return f"Hello, {name}" say_hi() class CountCalls: def init (self, func): self

print(power.) # power (not wrapper) print(power. doc ) # Raise base to exponent 6. Decorators with arguments (nested factory) def repeat(times): def decorator(func): @wraps(func) def wrapper(*args, **kwargs): for _ in range(times): result = func(*args, **kwargs) return result return wrapper return decorator

say = greet # assign function to variable print(say("Alice")) # Hello, Alice def outer(msg): def inner(): # closure captures 'msg' print(msg) return inner