### Lab7-1 ###

>>> leds = [16, 14, 12, 13, 15, 5, 4]
>>> for i in leds:
        print(i)



### Lab7-2 ###

from machine import Pin
import time

while True:
    led = Pin(16, Pin.OUT)
    led.value(1)
    time.sleep(0.1)
    led.value(0)
    led = Pin(14, Pin.OUT)
    led.value(1)
    time.sleep(0.1)
    led.value(0)
    led = Pin(12, Pin.OUT)
    led.value(1)
    time.sleep(0.1)
    led.value(0)
    led = Pin(13, Pin.OUT)
    led.value(1)
    time.sleep(0.1)
    led.value(0)
    led = Pin(15, Pin.OUT)
    led.value(1)
    time.sleep(0.1)
    led.value(0)
    led = Pin(5, Pin.OUT)
    led.value(1)
    time.sleep(0.1)
    led.value(0)
    led = Pin(4, Pin.OUT)
    led.value(1)
    time.sleep(0.1)
    led.value(0)



### Lab7-3 (Lab09.py) ###

from machine import Pin
import time

# 建立串列, 依序儲存 D0、D5、D6、D7、D8、D1、D2 腳位編號
leds = [16, 14, 12, 13, 15, 5, 4]

while True:                    # 重複跑馬燈效果
    for i in leds:             # 依序取出個別腳位編號
        led = Pin(i, Pin.OUT)  # 設定當前腳位為輸出功能
        led.value(1)           # 點亮對應的 LED
        time.sleep(0.1)        # 等待 0.1 秒
        led.value(0)           # 熄滅剛剛點亮的 LED



### Lab7-4 ###

>>> leds = [16, 14, 12, 13, 15, 5, 4]
>>> for i in reversed(leds):
        print(i)



### Lab7-5 (Lab10.py) ###

from machine import Pin
import time

leds = [16, 14, 12, 13, 15, 5, 4]

while True:
    for i in leds:
        led = Pin(i, Pin.OUT)
        led.value(1)
        time.sleep(0.05)
        led.value(0)

    for i in reversed(leds):
        led = Pin(i, Pin.OUT)
        led.value(1)
        time.sleep(0.05)
        led.value(0)

      

### Lab7-6 ###

>>> a = ['a', 'b', 'c', 'd']
>>> a[1]
>>> a[-3]
>>> a[-1]
>>> a[1:3]
>>> a[-3:-1]