[Python] How to center Pascal's Triangle in Python?

I need to print Pascal's Triangle as pyramid. I can only get it to print as a right triangle. I've looked at other questions on here asking the same thing, but can't figure out how to apply it to my code:

def comb(k,n):
ans = 1
if (k > n//2):
k = n-k
for i in range(k):
ans *= (n-i)
ans //= (i+1)
return ans

def printPascal(n):
x = []

for row in range(n):
arr = []
for i in range (row + 1):
arr.append(comb(i, row))
x.append(arr)
return x

n = eval(input("How many rows should there be [3-8]? "))

x = printPascal(n)

for i in range(len(x)):
for j in range(len(x)):
print(x[j], end=" ")
print()


I saw the center method as an option, but can't figure out how to determine the maximum width based on the final row

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