Yield Generate class created by maffaz - https://repl.it/@maffaz/Yield-Generate-class

Yield Generate class.py

arri = [32, 23, 542, 25, 25, 3254, 234]
arri2 = [432, 52, 53, 523, 532, 52]
arri3 = [7, 52, 53, 7, 532, 7]

def n():
    print('\n\n')
    
n = n()

class timesby():
    
    def f(self, arr):
        def g(a):
            for j in a:
                j = j * 2
                yield j
    
        for i in g(arr):
            yield i

    def k(self, arr2):
        def j(b):
            for m in b:
                s = m * 3
                yield s
            
        for t in j(arr2):
            yield t

    
    def enum1(self, arr3):
        print('enum1')
        def l(c):
            for i, j in enumerate(arr3):
                yield i, j
    
        for x, z in l(arr3):
            x = 'Hello'
            z = z * 3
            yield x, z

            
times1 = timesby()            

times2 = timesby()

times3 = timesby()



map1 = list(map(lambda x: str(x) + 'John' if x % 4 else x, times1.k(arri)))
print(map1, n)

map2 = list(map(lambda x: x * 2 if x % 3 else None, times2.f(arri2)))
print(map2, n)

fil = list(filter(lambda x: x * 3 if x == 7 else 1, times3.enum1(arri3)))
print(fil, n)