from itertools import islice
class Fibonacci:
def __init__(self):
self.prev = 0
self.curr = 1
def __iter__(self):
return self
def __next__(self):
value = self.curr
self.curr += self.prev
self.prev = value
return value
fibonacci = Fibonacci()
list(islice(fibonacci, 0, 10))
# [1, 1, 2, 3, 5, 8, 13, 21, 34, 55]
from itertools import (islice, cycle)
programing_languages = cycle(['php', 'javascript', 'python', 'golang'])
limited = islice(programing_languages, 0, 2)
for pl in limited:
print(pl)
# php
# javascript
from itertools import cycle
colors = cycle(['crimsonred', 'purple', 'seablue'])
next(colors)
# crimsonred
next(colors)
# purple
next(colors)
# seablue
next(colors)
# crmisonred (AGAIN!)
from itertools import count
counter = count(start = 13)
next(counter)
# 13
next(counter)
# 14
next(counter)
# 15
next(counter)
# 16