Identify any bug in below code. Explain if its a logical, syntax or run-time error and why. Provide line number of the identified error. If no errors, write valid code.

class Language:

def speak(self, lang = "English"):

self.lang = lang

return(lang)

class French(Language):

def speak(self):

return(self.lang)

class Canada(Language):

pass

#Object instantiation

x = French()

print(x.speak())

--------------------------------------------------------- (T/F) A docstring is required and should clearly and concisely summarize the purpose of a class or method it is describing.

--------------------------------------------------------- (T/F) The diamond problem is an unique issue that can occur in multiple inheritance but not in single inheritance situation.

---------------------------------------------------------

Identify any bug in below code. Explain if its a logical, syntax or run-time error and why. Provide line number of the identified error(s). If no errors, write valid code.

from math import pi

class MyCircle:

def __init__(self, r):

self.r = r

def circle_area():

return pi * r**2

r = MyCircle(4)

area = circle_area(r)

print (area)

--------------------------------------------------------- (T/F) Multiple inheritance allows a subclass to inherit functionality from multiple parent classes.