Question

I have this code, but I don’t know how can I make it looks like a python code and not a c-like code:

n=10

a = [[0 for row in xrange(n)]for col in range(n) ]
for i in xrange(n):
    a[i][0] = 1
    a[0][i] = 1


for i in xrange(1,n):
    for j in xrange(1,n):
        a[i][j] = a[i-1][j] + a[i][j-1]

Answer 1

from itertools import product
n = 10

a = [[1 if i==0 or j==0 else 0 for i in range(n)] for j in range(n)]

for i,j in product(range(1, n), repeat=2):
         a[i][j] = a[i-1][j] + a[i][j-1]

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You could also generate a like this:

a = [[1 - (i > 0 < j) for i in range(n)] for j in range(n)]