I have this list comprehension:
[[x,x] for x in range(3)]
which results in this list:
[[0, 0], [1, 1], [2, 2]]
but what I want is this list:
[0, 0, 1, 1, 2, 2]
What's the easiest to way to generate this list?
See Question&Answers more detail:
os 与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…