python-關於list拼接的一些坑

# 相加返回的是列表,故直接打印出來 print([1, 2] + [3]) # [1, 2, 3] print([1, 2] + [[3]]) # [1, 2, [3]] a = [1, 2] # 由於append方法並不返回列表,實際上此時a已是[1, 2, 3] print(a.append(3)) # None print(a) # [1, 2, 3]

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