[Python] 迴圈

一、For...in

1. 數字迴圈

for i in range(10):

 print(i)

2. 陣列迴圈

persons = ['A1', 'A2', 'A3', 'A4']

for i in persons:

 print(i)

3. 數字迴圈與陣列迴圈特別寫法

(1)

squares = [i for i in range(10)]

print(squares)

squares2 = [i for i in range(10) if i>4]

print(squares2)

(2)

persons = ['A1', 'A2', 'A3', 'A4']

nums=[i for i in persons]

4. for 指名陣列位置

T=["A","B","C","D","E"]

for i in T[2]:

    print(i)

3. enumerate() 函式顯示索引跟值

persons=["A","B","C","D","E"]

for i, person in enumerate(persons):

   print(f'{i}值 {person}', end='')

二、While

1. while 迴圈用法

i = 0

while i < 100:

    print(i)

    i = i + 1

2. while 陣列輸出

persons = ['A1', 'A2', 'A3', 'A4']

while 0 < len(persons):

    print(persons.pop())