[파이썬] 문제 : numpy 2차원 배열 슬라이싱

a = np.array([[0, 0, 0, 0, 0]
    ,[0, 1, 1, 1, 0]
    ,[0, 1, 2, 1, 0]
    ,[0, 1, 1, 1, 0]
    ,[0, 0, 0, 0, 0]])

b = a[1:4,1:4]
print(b)
print()

c = a[0:3,0:3]
print(c)
print()

d = a[0:3,1:4]
print(d)
print()

e = a[1:4,2:5]
print(e)
print()

f = a[2,]
print(f)