Bra jobbat!

Att skriva funktioner i Python

Shayne Miel

Software Architect @ Duo Security

Kapitel 1 – Bästa praxis

Docstrings
DRY och gör en sak
Pass by assignment (muterbart vs icke-muterbart)

Kapitel 2 – Kontexthanterare

with my_context_manager() as value:
  # do something

@contextlib.contextmanager
def my_function():
  # this function can be used in a "with" statement now

Kapitel 3 – Dekoratorer

@my_decorator
def my_decorated_function():
  # do something

def my_decorator(func):
  def wrapper(*args, **kwargs):
    return func(*args, **kwargs)
  return wrapper

Kapitel 4 – Mer om dekoratorer

def my_decorator(func):
  @functools.wraps(func)
  def wrapper(*args, **kwargs):
    return func(*args, **kwargs)
  return wrapper

Kapitel 4 – Mer om dekoratorer

def decorator_that_takes_args(a, b, c):
  def decorator(func):
    @functools.wraps(func)
    def wrapper(*args, **kwargs):
      return func(*args, **kwargs)
    return wrapper
  return decorator

Tack!

Att skriva funktioner i Python