python中怎么实现星星排列

python中怎么实现星星排列？下面给大家带来几种排列阵型。

星星阵型1

def stars1(n):
for i in range(1,n+1):
str = "*"*i
print str
if __name__ ==  "__main__":
stars1(5)

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星星阵型2

def stars2(n):
for i in range(1,n+1):
str = '*'*(n+1-i)
print str
if __name__ ==  "__main__":
stars2(5)

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星星阵型3

def stars3(n):
for i in range(1,n+1):
str = ' ' * (n-i) + '*' * i
print str
if __name__ ==  "__main__":
stars3(5)

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星星阵型4

def stars4(n):
for i in range(1,1+n):#total n line(s)
str = ' '*(i-1) + '*'*(n+1-i)
print str
if __name__ ==  "__main__":
stars4(5)

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5. 菱形阵型

def stars5(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__":
stars5(5)

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6. 沙漏阵型

def star6(n):
    a = [i*2+1 for i in range(n)[::-1]]
    b = [i*2+1 for i in range(n)][1:]
    aa = a + b
    
    d = [i for i in range(n)]
    e = [i for i in range(n)[::-1]][1:]
    dd = d + e
    
    for j in range(len(dd)):
        print ' '*dd[j] + '*'*aa[j]   
         
if __name__ == "__main__":
    star6(5)

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