Perulangan for dan while

Python Menengah untuk Keuangan

Kennedy Behrman

Data Engineer, Author, Founder

Mengulang blok kode

CUSIP

037833100

17275R102

68389X105

SIMBOL

AAPL

CSCO

ORCL

Perulangan.

Perulangan for

Perulangan while

Komponen pernyataan

<Pernyataan Kontrol>
    <Blok Kode>

eksekusi 1

eksekusi 2

eksekusi 3

Perulangan for

for <variable> in <sequence>:

for x in [0, 1, 2]:

d = {'key': 'value1'}
for x in d:

for x in "ORACLE":

Contoh list

for x in [0, 1, 2]:
    print(x)

0
1
2

Contoh dictionary

symbols = {'037833100': 'AAPL',
           '17275R102': 'CSCO'
           '68389X105': 'ORCL'}
for k in symbols:
    print(symbols[k])

AAPL
CSCO
ORCL

Contoh string

for x in "ORACLE":
    print(x)

O
R
A
C
L
E

Pernyataan while

while <expression>:

Contoh while

x = 0

while x < 5:
    print(x)
    x = (x + 1)

Perulangan tak berujung

x = 0

while x <= 5:
     print(x)

Lewati dengan continue

for x in [0, 1, 2, 3]:
   if x == 2:
       continue
   print(x)

0
1
3

Hentikan dengan break.

while True:
    transaction = get_transaction()
    if transaction['symbol'] == 'ORCL':
        print('The current symbol is ORCL, break now')
        break
    print('Not ORCL')

Not ORCL
Not ORCL
Not ORCL
The current symbol is ORCL, break now

Ayo berlatih 'for' dan 'while'!

Python Menengah untuk Keuangan