###### tags: `python`
## wk06_1012 迴圈 while , break, continue
1. break
2. continue
3. while
## 【inclass practice】
```python
#6. 最小公倍數 \<multiple>
#a = int(input("請輸入 a 的值："))
#b = int(input("請輸入 b 的值："))
a = 5 *19
b = 17
maxno = a * b
for i in range(1, maxno + 1):
if(i % a == 0 and i % b == 0):
break
print("%d 和 %d 的最小公倍數=%d" % (a, b, i))
```
95 和 17 的最小公倍數=1615
```python
# 7. 顯示正整數數列，排除5的倍數 \<except5>
#n = int(input("請輸入正整數："))
n = 6
for i in range(1, n+1):
if i % 5 ==0:
continue
print(i,end=" ")
```
1 2 3 4 6
```python
p=1
counter=0
#n = int(input("請輸入正整數："))
n = 10
print(n,"的因數有",end=" ")
while (p<=n):
if (n%p==0):
print(p,end=" ")
counter+=1
p+=1
print()
if (counter==2):
print(n,"是質數")
else:
print(n,"不是質數", "因數有", counter, "個")
```
10 的因數有 1 2 5 10
10 不是質數 因數有 4 個
```python
#1. 觀察各種不同參數的以range()建立的數列 \<range>
list1=range(10)
list2=range(1,10)
list3=range(1,10,2)
list4=range(10,1,-2)
print(list(list1)) # [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
print(list(list2)) # [1, 2, 3, 4, 5, 6, 7, 8, 9]
print(list(list3)) # [1, 3, 5, 7, 9]
print(list(list4)) # [10, 8, 6, 4, 2]
```
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
[1, 2, 3, 4, 5, 6, 7, 8, 9]
[1, 3, 5, 7, 9]
[10, 8, 6, 4, 2]
```python
# 5. 九九乘法表 <ninenine>
for i in range(1,10):
for j in range(1,10):
product = i * j
#print("%d*%d=%2d " % (i, j, product), end="")
print(i, "*", j , "=", i * j)
print()
```
1 * 1 = 1
1 * 2 = 2
1 * 3 = 3
1 * 4 = 4
1 * 5 = 5
1 * 6 = 6
1 * 7 = 7
1 * 8 = 8
1 * 9 = 9
2 * 1 = 2
2 * 2 = 4
2 * 3 = 6
2 * 4 = 8
2 * 5 = 10
2 * 6 = 12
2 * 7 = 14
2 * 8 = 16
2 * 9 = 18
3 * 1 = 3
3 * 2 = 6
3 * 3 = 9
3 * 4 = 12
3 * 5 = 15
3 * 6 = 18
3 * 7 = 21
3 * 8 = 24
3 * 9 = 27
4 * 1 = 4
4 * 2 = 8
4 * 3 = 12
4 * 4 = 16
4 * 5 = 20
4 * 6 = 24
4 * 7 = 28
4 * 8 = 32
4 * 9 = 36
5 * 1 = 5
5 * 2 = 10
5 * 3 = 15
5 * 4 = 20
5 * 5 = 25
5 * 6 = 30
5 * 7 = 35
5 * 8 = 40
5 * 9 = 45
6 * 1 = 6
6 * 2 = 12
6 * 3 = 18
6 * 4 = 24
6 * 5 = 30
6 * 6 = 36
6 * 7 = 42
6 * 8 = 48
6 * 9 = 54
7 * 1 = 7
7 * 2 = 14
7 * 3 = 21
7 * 4 = 28
7 * 5 = 35
7 * 6 = 42
7 * 7 = 49
7 * 8 = 56
7 * 9 = 63
8 * 1 = 8
8 * 2 = 16
8 * 3 = 24
8 * 4 = 32
8 * 5 = 40
8 * 6 = 48
8 * 7 = 56
8 * 8 = 64
8 * 9 = 72
9 * 1 = 9
9 * 2 = 18
9 * 3 = 27
9 * 4 = 36
9 * 5 = 45
9 * 6 = 54
9 * 7 = 63
9 * 8 = 72
9 * 9 = 81
```python
# 5. 九九乘法表 <ninenine>
for i in range(1,10):
for j in range(1,10):
product = i * j
print("%d*%d=%2d " % (i, j, product), end="")
print()
```
1*1= 1 1*2= 2 1*3= 3 1*4= 4 1*5= 5 1*6= 6 1*7= 7 1*8= 8 1*9= 9
2*1= 2 2*2= 4 2*3= 6 2*4= 8 2*5=10 2*6=12 2*7=14 2*8=16 2*9=18
3*1= 3 3*2= 6 3*3= 9 3*4=12 3*5=15 3*6=18 3*7=21 3*8=24 3*9=27
4*1= 4 4*2= 8 4*3=12 4*4=16 4*5=20 4*6=24 4*7=28 4*8=32 4*9=36
5*1= 5 5*2=10 5*3=15 5*4=20 5*5=25 5*6=30 5*7=35 5*8=40 5*9=45
6*1= 6 6*2=12 6*3=18 6*4=24 6*5=30 6*6=36 6*7=42 6*8=48 6*9=54
7*1= 7 7*2=14 7*3=21 7*4=28 7*5=35 7*6=42 7*7=49 7*8=56 7*9=63
8*1= 8 8*2=16 8*3=24 8*4=32 8*5=40 8*6=48 8*7=56 8*8=64 8*9=72
9*1= 9 9*2=18 9*3=27 9*4=36 9*5=45 9*6=54 9*7=63 9*8=72 9*9=81
```python
# 5. 九九乘法表 <ninenine>
for i in range(1,10):
for j in range(1,10):
product = i * j
print("%d*%d=%2d " % (j, i, product), end="")
print()
```
1*1= 1 2*1= 2 3*1= 3 4*1= 4 5*1= 5 6*1= 6 7*1= 7 8*1= 8 9*1= 9
1*2= 2 2*2= 4 3*2= 6 4*2= 8 5*2=10 6*2=12 7*2=14 8*2=16 9*2=18
1*3= 3 2*3= 6 3*3= 9 4*3=12 5*3=15 6*3=18 7*3=21 8*3=24 9*3=27
1*4= 4 2*4= 8 3*4=12 4*4=16 5*4=20 6*4=24 7*4=28 8*4=32 9*4=36
1*5= 5 2*5=10 3*5=15 4*5=20 5*5=25 6*5=30 7*5=35 8*5=40 9*5=45
1*6= 6 2*6=12 3*6=18 4*6=24 5*6=30 6*6=36 7*6=42 8*6=48 9*6=54
1*7= 7 2*7=14 3*7=21 4*7=28 5*7=35 6*7=42 7*7=49 8*7=56 9*7=63
1*8= 8 2*8=16 3*8=24 4*8=32 5*8=40 6*8=48 7*8=56 8*8=64 9*8=72
1*9= 9 2*9=18 3*9=27 4*9=36 5*9=45 6*9=54 7*9=63 8*9=72 9*9=81
```python
```
```python
```
### 補充 while
1. 猜數字遊戲：寫一個程式，隨機選擇一個1到100的數字，然後要求玩家通過輸入猜測該數字，直到猜對為止。使用while迴圈來實現，並在玩家猜對時結束遊戲。
2. 使用者輸入：寫一個程式，要求使用者輸入一個整數，然後使用while迴圈，只有當輸入的數字是正整數時，才繼續請求輸入。如果輸入不是正整數，則繼續要求輸入，直到收到正確的輸入。
3. 倒數計時器：寫一個程式，請求使用者輸入一個正整數作為倒數計時的秒數，然後使用while迴圈從輸入的秒數倒數到0。在每個秒數的間隔打印出剩餘的秒數。
4. 累積加法：寫一個程式，要求使用者不斷輸入整數，並使用while迴圈計算這些整數的總和。當使用者輸入0時，停止接受輸入並印出總和。
5. 數字猜謎：寫一個程式，在1到10之間選擇一個隨機數字，然後要求玩家通過輸入猜測該數字。使用while迴圈來實現，並提供猜測是太高還是太低的提示，直到猜對為止。
```python
import time
#countdown = int(input("請輸入倒數的秒數："))
countdown = 3
while countdown > 0:
print(countdown)
time.sleep(1)
countdown -= 1
print("時間到！")
```
3
2
1
時間到！
```python
total = 0
while True:
#num = int(input("請輸入一個整數（輸入0結束）："))
num=0
if num == 0:
break
total += num
print(f"總和：{total}")
```
總和：0
```python
user_input = None
while not user_input:
#user_input = input("請輸入一個正整數：")
user_input = 10
if user_input.isdigit():
user_input = int(user_input)
else:
user_input = None
print("請輸入正確的整數。")
print(f"您輸入了正整數：{user_input}")
```
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-10-7f2f1f5f6786> in <module>
4 #user_input = input("請輸入一個正整數：")
5 user_input = 10
----> 6 if user_input.isdigit():
7 user_input = int(user_input)
8 else:
AttributeError: 'int' object has no attribute 'isdigit'
```python
import random
# 生成隨機數字
#target_number = random.randint(1, 100)
target_number = 100
guess = None
attempts = 0
while guess != target_number:
#guess = int(input("請猜一個1到100的數字："))
guess = 100
attempts += 1
if guess < target_number:
print("太低了！再猜一次。")
elif guess > target_number:
print("太高了！再猜一次。")
print(f"恭喜！你猜對了，答案是{target_number}。你總共猜了{attempts}次。")
```
```python
import random
# 生成隨機數字
#target_number = random.randint(1, 10)
target_number = 10
guess = None
while guess != target_number:
#guess = int(input("請猜一個1到10的數字："))
guess = 10
if guess < target_number:
print("太低了！再猜一次。")
elif guess > target_number:
print("太高了！再猜一次。")
print(f"恭喜！你猜對了，答案是{target_number}。")
```
## 【afterclass practice】
1. 複習ch03、ch04
2. 教學影音 lesson 7、9
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