Abstract method not overridden PYL-W0223
Bug risk
Major
3 years ago
—
3 years old
Method 'error' is abstract in class 'ParserBase' but is not overridden
208 time.time(), offset, 0, size, total)
209
210 def parse_storage(self, html):
211 class TheHTMLParser(HTMLParser):212 def __init__(self):
213 HTMLParser.__init__(self)
214 self.script = False
Description
A method marked with @abstractmethod is not defined in the concrete class. This can result in unintended behavior.
It is recommended to implement all abstract methods in the derived classes.
Bad practice
from abc import ABC, abstractmethod
class Vehicle(ABC):
@abstractmethod
def start():
pass
class Car(Vehicle):
# No overridden `start` method here. Can cause unintended behavior
def stop():
self.speed = 0
Recommended
from abc import ABC, abstractmethod
class Vehicle(ABC):
@abstractmethod
def start():
pass
class Car(Vehicle):
def start():
self.speed = 3
def stop():
self.speed = 0