How to print rhombus in python

How to print rhombus in python? Here are three methods for you:

The first one

rows = int(input('请输入菱形边长：\n'))
row = 1
while row <= rows:
    col = 1     # 保证每次内循环col都从1开始，打印前面空格的个数
    while col <= (rows-row):  # 这个内层while就是单纯打印空格
        print(&#39; &#39;, end=&#39;&#39;)  # 空格的打印不换行
        col += 1
    print(row * &#39;* &#39;)  # 每一行打印完空格后，接着在同一行打印星星，星星个数与行数相等，且打印完星星后print默认换行
    row += 1
 
bottom = rows-1
while bottom > 0:
    col = 1     # 保证每次内循环col都从1开始，打印前面空格的个数
    while bottom+col <= rows:
        print(&#39; &#39;, end=&#39;&#39;)  # 空格的打印不换行
        col += 1
    print(bottom * &#39;* &#39;)  # 每一行打印完空格后，接着在同一行打印星星，星星个数与行数相等，且打印完星星后print默认换行
    bottom -= 1

Output result:

请输入菱形边长：
5
    * 
   * * 
  * * * 
 * * * * 
* * * * * 
 * * * * 
  * * * 
   * * 
    *

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Second type

s = '*'
for i in range(1, 8, 2):
    print((s * i).center(7))
for i in reversed(range(1, 6, 2)):
    print((s * i).center(7))

Output result:

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

Third type

def stars(n):
    RANGE1 = [2*i+1 for i in range(n)]
    RANGE2 = [2*i+1 for i in range(n)[::-1]][1:]
    RANGE = RANGE1 + RANGE2
    RANGE_1 = [i for i in range(n)[::-1]]
    RANGE_2 = [i for i in range(n)[1:]]
    RANGE_12 = RANGE_1 + RANGE_2
    for i in range(len(RANGE)):
        print (' '*RANGE_12[i] + '*'*RANGE[i])
if __name__ ==  "__main__":
    stars(5)

Output result:

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

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