打印列表垂直/居中的帕斯卡三角形

Question

我被一个看似简单的问题难住了。一切都被正确地计算和显示。我要它水平打印并居中打印。另外，删除括号和逗号的方法是加号。在

from math import factorial
numcheck = False
while numcheck == False:
try:
    height = (raw_input("Input height of Pascal's Triangle (must be integer): "))
    height = int(height)
    numcheck = True
except ValueError:
    print "Not an integer!"
pascaltri = [[factorial(n) // (factorial(k) * factorial(n - k)) for k in range(n+1)]
 for n in range(height)]
print pascaltri

Answer 1

您可以这样格式化它：

maxlen = len(" ".join([str(i) for i in pascaltri[-1]]))
formatted = '\n'.join([ " ".join([str(i) for i in line]).center(maxlen) for line in pascaltri])
print formatted

但是看看Fredrik的链接，有很多有趣的想法，包括更有效的方法来生成三角形。在