Pengenalan iterator

Kotak Perkakas Python

Hugo Bowne-Anderson

Data Scientist at DataCamp

Iterasi dengan for loop

employees = ['Nick', 'Lore', 'Hugo']

for employee in employees:
    print(employee)

Nick
Lore
Hugo

for letter in 'DataCamp':
    print(letter)

D
a
t
a
C
a
m
p

for i in range(4):
    print(i)

Iterable
- Contoh: list, string, dictionary, koneksi berkas
- Objek dengan metode iter()
- Menerapkan iter() ke iterable menghasilkan iterator
Iterator
- Menghasilkan nilai berikutnya dengan next()

word = 'Da'
it = iter(word)

next(it)

'D'

next(it)

'a'

next(it)

StopIteration                   Traceback (most recent call last)
<ipython-input-11-2cdb14c0d4d6> in <module>()
-> 1 next(it)
StopIteration:

word = 'Data'
it = iter(word)

print(*it)

D a t a

print(*it)

pythonistas = {'hugo': 'bowne-anderson', 'francis': 'castro'}

for key, value in pythonistas.items():
    print(key, value)

francis castro
hugo bowne-anderson

file = open('file.txt')
it = iter(file)

print(next(it))

This is the first line.

print(next(it))

This is the second line.

Kotak Perkakas Python