Loop Python dirancang kanggo iterasi tembung iterables (koleksi) kanthi langsung, tinimbang manipulasi counter indeks — gawene resik lan mudah dibaca. Rong tipe loop yaiku for lan while.
fruit [, , ]:
(fruit)
fruits = [, ]
i ((fruits)):
(fruits[i])
Python's for nglakoni iterasi menyang elemen dhéwé — ora perlu indeks manual. Iki luwih resik lan luwih sithik pranyatan tinimbang loop base-indeks.
# range — generate numbers
for i in range(5): # 0,1,2,3,4
for i in range(2, 10, 2): # 2,4,6,8 (start, stop, step)
# enumerate — when you DO need the index AND the item
for i, fruit in enumerate(fruits):
print(f"{i}: {fruit}")
# zip — iterate multiple sequences in parallel
for name, age in zip(names, ages):
print(f"{name} is {age}")
# dict iteration
for key, value in user.items():
print(key, value)
enumerate (indeks + item) lan zip (iterasi paralel) ngganti manipulasi indeks sing canggung — gunakaké kuwi tinimbang range(len(...)).
while condition:
do_work()
if done: break # exit the loop
if skip: continue # jump to the next iteration
for item in items:
if item == target:
break
else:
# runs ONLY if the loop completed WITHOUT a break
print("not found")
else ing loop iki lumakru yen rampung kanthi normal (ora ana break) — mangga kanggo pola pencarian.
Model iterasi Python — ngerjani item tinimbang indeks — inti saka nulis kode sing resik lan idiomatis.
Ngerti alat-alat sing tepat (enumerate nalika mbutuhake indeks, zip kanggo iterasi paralel, range kanggo hitung, .items() kanggo dicts) ngobihake sampeyan saka anti-pola range(len(...)) sing rentan pranyatan sing pemula asale saka basa liya sering nulis.
Iterasi resik minangka tanda asane kode Pythonic, lan pembantu kasebut digunakake ing mbok menawa saben program.