编辑代码

# coding:utf-8
#JSRUN引擎2.0，支持多达30种语言在线运行，全仿真在线交互输入输出。 
a=[[0 for i in range(90) ]for j in range(300)]
n=int(input("输入行数"))
for i in range(n):
    for j in range(i+1):
        if i<=1:
            a[i][j]=1
        elif j>0 and i!=j:
            a[i][j]=a[i-1][j-1]+a[i-1][j]
        else:
            a[i][j]=1

for i in range(n):
    for j in range(i+1):
        print(a[i][j],end=" ")
    print()