Why isn’t my code working??? It keeps crashing with this error “area not defined”

Question

class Class:
def __init__(self, width, height, bool):
self.width=width
self.height=height
self.bool=bool

def area():
print("Running")
return self.width * self.height

def calc(self):
if self.bool == True:
print("Running")
area()
else:
print("Stopped")

@classmethod
def sub(cls, length, val):
return cls(length, length, val)

square = Class.sub(5, True)
print(square.calc())

Answer 1

Ravilnicki, Thanks. It stopped the error message🤩🥳👍🏽
But now it out puts “None”😭😭 Instead of 25