print("abc DEF".capitalize())

class A:
    @staticmethod
    def a(x):
        print(x)
A.a(100)

def foo(k):
    k = [1]

q = [0]
foo(q)
print(q)

a = [0, 1, 2, 3]
for a[0] in a:
    print(a[0])

class Demo:
    def __init__(self):
        self.a = 1
        self.__b = 1
 
    def display(self):
        return self.__b
 
obj = Demo()
print(obj.__b)

X = 2+9*((3*12)-8)/10

re.split(r'(a)(t)', 'Maths is a difficult subject')

aTuple = (100, 200, 300, 400, 500)
aTuple[1] = 800
print(aTuple)

class A: 
   def __init__(self, i=100): 
      self.i=i 
class B(A): 
   def __init__(self,j=0): 
      self.j=j 
def main(): 
   b= B() 
   print(b.i) 
   print(b.j) 
main()