相关疑难解决方法(0)

检查列表单调性的有效和pythonic方法是什么？
即它具有单调增加或减少的值？

例子:

[0, 1, 2, 3, 3, 4]   # This is a monotonically increasing list
[4.3, 4.2, 4.2, -2]  # This is a monotonically decreasing list
[2, 3, 1]            # This is neither