Generatory.py

print()
# wersja obiektowa -------------------------------------------------------------
# bezpośredniej implementacji protokołu iteratora ------------------------------
print('FIBONACCI WERSJA OBIEKTOWA'.center(85,'-'))
class Fib:
	def __init__(self, nn):
		self.__n = nn
		self.__i = 0
		self.__p1 = self.__p2 = 1

	def __iter__(self):
		#print("Fib iter")
		return self

	def __next__(self):
		self.__i += 1
		if self.__i > self.__n:
			raise StopIteration
		if self.__i in [1, 2]:
			return 1
		ret = self.__p1 + self.__p2
		self.__p1, self.__p2 = self.__p2, ret
		return ret

class Class:
	def __init__(self, n):
		self.__iter = Fib(n)

	def __iter__(self):
		#print("Class iter")
		return self.__iter;


for i in Class(10):
	print(i, end=' ')
print()
print(list(Class(10)))



print()
# GENERATOR Z YIELD ------------------------------------------------------------
print('GENERATOR FIBONACCI Z YIELD'.center(85,'-'))
def Fibs(n):
    p = pp = 1
    for i in range(n):
        if i in [0, 1]:
            yield 1
        else:
            n = p + pp
            pp, p = p, n
            yield n

for i in Fibs(10):
	print(i, end=' ')
print()
print(list(Fibs(10)))


print()
# WYRAŻENIE LISTOWE A GENERATOR ------------------------------------------------
print('WYRAŻENIE LISTOWE A GENERATOR'.center(85,'-'))
lst = [1 if x % 2 == 0 else 0 for x in range(10)]
genr = (1 if x % 2 == 0 else 0 for x in range(10))

print(lst)
for v in lst:
    print(v, end=" ")
print()

print(genr)
for v in genr:
    print(v, end=" ")
print()

print()
# LAMBDA I FUNKCJA 	map() ------------------------------------------------------
print('LAMBDA I FUNKCJA MAP()'.center(85,'-'))
lista1 = [x for x in range(5)]
lista2 = list(map(lambda x: 2 ** x, lista1))
print(lista2)

for x in map(lambda x: x * x, lista2):
	print(x, end=' ')
print()


print()
# LAMBDA I FUNKCJA filter() ----------------------------------------------------
print('LAMBDA I FUNKCJA filter()'.center(85,'-'))
from random import seed, randint
seed(5)
dane = [ randint(-10,10) for x in range(10) ]
filtr = list(filter(lambda x: x > 0 and x % 2 == 0, dane))
print(dane)
print(filtr)

for i in filter(lambda x: x > 0 and x % 2 == 0, dane):
    print(i,end=' ')
print()