list = [1, 2, 3, 4, 5, 6, 7]
p1 = []
for i in range(0,len(list)-1,2):
p2 = []
p2.append(list[i])
p2.append(list[i+1])
p1.append(p2)
print(p1)
[[1, 2], [3, 4], [5, 6]]
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