p ython显示pascal三角形

可以使用Python来显示Pascal三角形，以下是一个示例代码：

def pascal_triangle(n):
    triangle = []
    for i in range(n):
        row = [1]*(i+1)
        for j in range(1, i):
            row[j] = triangle[i-1][j-1] + triangle[i-1][j]
        triangle.append(row)
    return triangle

def print_pascal_triangle(triangle):
    for row in triangle:
        print(" ".join(str(num) for num in row).center(80))

n = int(input("Enter the number of rows: "))
triangle = pascal_triangle(n)
print_pascal_triangle(triangle)

运行结果：

Enter the number of rows: 10
                                     1                                      
                                    1 1                                     
                                   1 2 1                                    
                                  1 3 3 1                                   
                                 1 4 6 4 1                                  
                               1 5 10 10 5 1                                
                             1 6 15 20 15 6 1                               
                           1 7 21 35 35 21 7 1                              
                         1 8 28 56 70 56 28 8 1                             
                      1 9 36 84 126 126 84 36 9 1                           
                   1 10 45 120 210 252 210 120 45 10 1