python变量命名的7条建议

ymdstr = datetime.date.today().strftime("%y-%m-%d")

current_date: str = datetime.date.today().strftime("%y-%m-%d")

get_user_info()
get_client_data()
get_customer_record()

get_user_info()
get_user_data()
get_user_record()

class User:
  info : str

  @property
  def data(self) -> dict:
    # ...

  def get_record(self) -> Union[Record, None]:
    # ...

time.sleep(86400);

# 在全局命名空间声明变量，一天有多少秒
SECONDS_IN_A_DAY = 60 * 60 * 24

time.sleep(SECONDS_IN_A_DAY)

address = 'One Infinite Loop, Cupertino 95014'
city_zip_code_regex = r'^[^,\\]+[,\\\s]+(.+?)\s*(\d{5})?$'
matches = re.match(city_zip_code_regex, address)

save_city_zip_code(matches[1], matches[2])

address = 'One Infinite Loop, Cupertino 95014'
city_zip_code_regex = r'^[^,\\]+[,\\\s]+(.+?)\s*(\d{5})?$'
matches = re.match(city_zip_code_regex, address)

city, zip_code = matches.groups()
save_city_zip_code(city, zip_code）

address = 'One Infinite Loop, Cupertino 95014'
city_zip_code_regex = r'^[^,\\]+[,\\\s]+(?P<city>.+?)\s*(?P<zip_code>\d{5})?$'
matches = re.match(city_zip_code_regex, address)

save_city_zip_code(matches['city'], matches['zip_code'])

seq = ('Austin', 'New York', 'San Francisco')

for item in seq:
  do_stuff()
  do_some_other_stuff()
  # ...
  # Wait, what's `item` for again?
  dispatch(item)

locations = ('Austin', 'New York', 'San Francisco')

for location in locations:
  do_stuff()
  do_some_other_stuff()
  # ...
  dispatch(location)

class Car:
  car_make: str
  car_model: str
  car_color: str

class Car:
  make: str
  model: str
  color: str

def create_micro_brewery(name):
  name = "Hipster Brew Co." if name is None else name
  slug = hashlib.sha1(name.encode()).hexdigest()
  # etc.

def create_micro_brewery(name: str = "Hipster Brew Co."):
  slug = hashlib.sha1(name.encode()).hexdigest()
  # etc.