在Python中随机抽样一个元素而不将其列为列表

我有4个列表，它们本身就是列表，因为它们包含3D点坐标

示例

var1 = [[0.09476800262928009, -0.23948000371456146, 0.22791500389575958], 
        [0.015838999301195145, 0.2482910007238388, 0.16062000393867493]]

我需要从这4个列表中选择一个随机列表，而不是将其本身作为列表

我现在用这句简单的话做这件事：

randomVar = random.sample([var1, var2, var3, var4], 1)

[[[0.09476800262928009, -0.23948000371456146, 0.22791500389575958], 
  [0.015838999301195145, 0.2482910007238388, 0.16062000393867493]]]

[[0.09476800262928009, -0.23948000371456146, 0.22791500389575958],
 [0.015838999301195145, 0.2482910007238388, 0.16062000393867493]]

>>> print randomVar

[[0.09476800262928009, -0.23948000371456146, 0.22791500389575958], 
 [0.015838999301195145, 0.2482910007238388, 0.16062000393867493]]

这给了我这个结果：

randomVar = random.sample([var1, var2, var3, var4], 1)

[[[0.09476800262928009, -0.23948000371456146, 0.22791500389575958], 
  [0.015838999301195145, 0.2482910007238388, 0.16062000393867493]]]

[[0.09476800262928009, -0.23948000371456146, 0.22791500389575958],
 [0.015838999301195145, 0.2482910007238388, 0.16062000393867493]]

>>> print randomVar

[[0.09476800262928009, -0.23948000371456146, 0.22791500389575958], 
 [0.015838999301195145, 0.2482910007238388, 0.16062000393867493]]

但我需要这个：

randomVar = random.sample([var1, var2, var3, var4], 1)

[[[0.09476800262928009, -0.23948000371456146, 0.22791500389575958], 
  [0.015838999301195145, 0.2482910007238388, 0.16062000393867493]]]

[[0.09476800262928009, -0.23948000371456146, 0.22791500389575958],
 [0.015838999301195145, 0.2482910007238388, 0.16062000393867493]]

>>> print randomVar

[[0.09476800262928009, -0.23948000371456146, 0.22791500389575958], 
 [0.015838999301195145, 0.2482910007238388, 0.16062000393867493]]

估计这个问题的答案会很简单，但我到目前为止还没有找到解决办法。对脚本编写来说还是很新的，所以如果我忽略了一个显而易见的解决方案，请原谅我

 randomVar = random.sample([var1, var2, var3, var4], 1)[0]

这将产生您想要的结果

示例输出：

randomVar = random.sample([var1, var2, var3, var4], 1)

[[[0.09476800262928009, -0.23948000371456146, 0.22791500389575958], 
  [0.015838999301195145, 0.2482910007238388, 0.16062000393867493]]]

[[0.09476800262928009, -0.23948000371456146, 0.22791500389575958],
 [0.015838999301195145, 0.2482910007238388, 0.16062000393867493]]

>>> print randomVar

[[0.09476800262928009, -0.23948000371456146, 0.22791500389575958], 
 [0.015838999301195145, 0.2482910007238388, 0.16062000393867493]]

randomVar=random.sample（[var1，var2，var3，var4]，1）[0]这样行吗？