Python 一次元配列を二次元配列に -Numpyなし

list1 = [0,1,2,3,4,5,6,7,8,9]
list2 = []
a = 0
b = 2
for i in range(5):
 c = list1[a:b]
 list2.append(c)
 a += 2
 b += 2
print(list2)

### OUTPUT
# [[0, 1], [2, 3], [4, 5], [6, 7], [8, 9]]

###

1次元のリストを2次元のリストに変換
[1,2,3,4,5,6,7,8,9]
⇨[[1,2,3][4,5,6][7,8,9]]
>>>jigen1=[1,2,3,4,5,6,7,8,9]
>>>jigen2=[]
>>>s1=1
>>>s2=3
>>>for i in range(10)
>>>       a=jigen1[s1:s2]
>>>       jigen2.append(a)
>>>       s1+=3
>>>       s2+=3
>>>print jigen2
[[1,2,3][4,5,6][7.8.9]]