# demo

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In [1]:

# print 函式可以列印字串
# 用雙引號或單引號或三引號圈起的內容就是字串
# 利用 print 列印單一 *
print("*")

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*

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In [2]:

# 利用 print 列印3個 *
print("***")

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***

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In [3]:

# 利用 print 列印空白與 *
print("*")
print(" *")
print("  *")

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*
*
*

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In [4]:

# 可以用乘號列印五個 *
print("*"*5)

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*****

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In [5]:

# for 迴圈可以透過 iterator 逐一執行迴圈內容
for i in range(5):
print(i)

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0
1
2
3
4

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In [6]:

for i in range(1, 5):
print(i)

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1
2
3
4

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In [7]:

for i in range(1, 5):
# 只列印不等於 3 的數值
if i != 3:
print(i)

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1
2
4

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In [8]:

for i in range(1, 5):
# 只列印用 2 除可以整除的偶數
if i %2 == 0:
print(i)

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2
4

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In [9]:

for i in range(1, 5):
# 只列印大於 3 的數值
if i > 3:
print(i)

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4

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In [10]:

for i in range(1, 5):
# 只列印大於 3 或者小於 2 的數值
if i > 3 or i < 2:
print(i)

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1
4

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In [11]:

for i in range(1, 7):
# 只列印大於 2 且小於 5 的數值
if i < 5 and i > 2:
print(i)

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3
4

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In [12]:

for i in range(1, 5):
print("*"*i)

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*
**
***
****

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In [13]:

for i in range(5, 0, -1):
print("*"*i)

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*****
****
***
**
*

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In [14]:

for i in range(1, 5):
# 請利用 help(print) 檢視 print 函式用法
print(" "*(i-1), end="")
print("*")

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*
*
*
*

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In [15]:

for i in range(5, 0, -1):
print(" "*(i-1), end="")
print("*")

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*
*
*
*
*

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In [16]:

for i in range(5):
print((5-i-1)*" ", end="")
print("*", end="")
print((2*i-1)*" ", end="")
if i != 0:
print("*", end="")
print((5-i-1)*" ", end="")
print()
for i in range(5-2, -1, -1):
print((5-i-1)*" ", end="")
print("*", end="")
print((2*i-1)*" ", end="")
if i != 0:
print("*", end="")
print((5-i-1)*" ", end="")
print()

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*
* *
*   *
*     *
*       *
*     *
*   *
* *
*

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In [17]:

def diamond(s):
for i in range(s):
print((s-i-1)*" ", end="")
print("*", end="")
print((2*i-1)*" ", end="")
if i != 0:
print("*", end="")
print((s-i-1)*" ", end="")
print()
for i in range(s-2, -1, -1):
print((s-i-1)*" ", end="")
print("*", end="")
print((2*i-1)*" ", end="")
if i != 0:
print("*", end="")
print((s-i-1)*" ", end="")
print()
diamond(10)

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*
* *
*   *
*     *
*       *
*         *
*           *
*             *
*               *
*                 *
*               *
*             *
*           *
*         *
*       *
*     *
*   *
* *
*

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In [18]:

def diamond(s):
for i in range(s):
print((s-i-1)*" ", end="")
print("*", end="")
print((2*i-1)*"*", end="")
if i != 0:
print("*", end="")
print((s-i-1)*" ", end="")
print()
for i in range(s-2, -1, -1):
print((s-i-1)*" ", end="")
print("*", end="")
print((2*i-1)*"*", end="")
if i != 0:
print("*", end="")
print((s-i-1)*" ", end="")
print()
diamond(10)

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*
***
*****
*******
*********
***********
*************
***************
*****************
*******************
*****************
***************
*************
***********
*********
*******
*****
***
*

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In [19]:

def diamond(s, p):
for i in range(s):
print((s-i-1)*" ", end="")
print(p, end="")
print((2*i-1)*" ", end="")
if i != 0:
print(p, end="")
print((s-i-1)*" ", end="")
print()
for i in range(s-2, -1, -1):
print((s-i-1)*" ", end="")
print(p, end="")
print((2*i-1)*" ", end="")
if i != 0:
print(p, end="")
print((s-i-1)*" ", end="")
print()
diamond(10,"*")
diamond(5, "a")

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*
* *
*   *
*     *
*       *
*         *
*           *
*             *
*               *
*                 *
*               *
*             *
*           *
*         *
*       *
*     *
*   *
* *
*
a
a a
a   a
a     a
a       a
a     a
a   a
a a
a

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In [20]:

def diamond(s, p):
for i in range(s):
print((s-i-1)*" ", end="")
print(p, end="")
print((2*i-1)*p, end="")
if i != 0:
print(p, end="")
print((s-i-1)*" ", end="")
print()
for i in range(s-2, -1, -1):
print((s-i-1)*" ", end="")
print(p, end="")
print((2*i-1)*p, end="")
if i != 0:
print(p, end="")
print((s-i-1)*" ", end="")
print()
diamond(10,"*")
diamond(5, "a")
diamond(5, "s")

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*
***
*****
*******
*********
***********
*************
***************
*****************
*******************
*****************
***************
*************
***********
*********
*******
*****
***
*
a
aaa
aaaaa
aaaaaaa
aaaaaaaaa
aaaaaaa
aaaaa
aaa
a
s
sss
sssss
sssssss
sssssssss
sssssss
sssss
sss
s

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In [21]:

def 菱形(n):
數列1 = [x+n for x in range(0, n)]
數列2 = list(range(n, 0, -1))
#print(數列1)
#print(數列2)
數列3 = zip(數列1, 數列2)
for i in 數列3:
for j in range(2*n):
if j == i[0] or j == i[1]:
print("*", end="")
else:
print(" ", end="")
print()

數列4 = [x for x in range(2, n+1)]
數列5 = [x+n-2 for x in range(n, 0, -1)]
#print(數列4)
#print(數列5)
數列6 = zip(數列4, 數列5)
for i in 數列6:
for j in range(2*n):
if j == i[0] or j == i[1]:
print("*", end="")
else:
print(" ", end="")
print()

n = 10

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*
* *
*   *
*     *
*       *
*         *
*           *
*             *
*               *
*                 *
*               *
*             *
*           *
*         *
*       *
*     *
*   *
* *
*

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In [22]:

'''請設法利用上述程式片段, 列印下列字串圖案:

*
**
***
****
*****
****
***
**
*

*
*
*
*
*
*
*
*
*

*
* *
*   *
*     *
*       *
*     *
*   *
* *
*
* *
*   *
*     *
*       *
*     *
*   *
* *
*

*       *
*     *
*   *
* *
*
* *
*   *
*     *
*       *

*       *
*     *
*   *
* *
*
* *
*   *
*     *
*       *
*     *
*   *
* *
*
* *
*   *
*     *
*       *
'''

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Out[22]:

'請設法利用上述程式片段, 列印下列字串圖案:\n\n*\n**\n***\n****\n*****\n****\n***\n**\n*\n\n以及\n\n*\n *\n  *\n   *\n    *\n   *\n  *\n *\n*\n\n以及\n\n    *    \n   * *   \n  *   *  \n *     * \n*       *\n *     * \n  *   *  \n   * *   \n    *   \n   * *   \n  *   *  \n *     * \n*       *\n *     * \n  *   *  \n   * *   \n    * \n    \n以及\n\n*       *\n *     * \n  *   *  \n   * *   \n    *    \n   * *   \n  *   *  \n *     * \n*       *\n\n以及\n\n*       *\n *     * \n  *   *  \n   * *   \n    *    \n   * *   \n  *   *  \n *     * \n*       *\n *     * \n  *   *  \n   * *   \n    * \n   * *   \n  *   *  \n *     * \n*       *\n'

``````