Question

How to calculate and print the Pascal triangle in Python

Answer 1

rows = 6
array = []

for i in range(rows):
    array.append([])
    array[i].append(1)
    for j in range(1, i):
        array[i].append(array[i-1][j-1]+array[i-1][j])
    if rows != 0:
        array[i].append(1)
for i in range(rows):
    print("   "*(rows-i), end=" ", sep=" ")
    for j in range(0, i+1):
        print('{0:5}'.format(array[i][j]), end=" ", sep=" ")
    print()


'''
run:

                       1
                    1     1
                 1     2     1
              1     3     3     1
           1     4     6     4     1
        1     5    10    10     5     1


'''

 

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