Python笔记——DeprecationWarning

定义如下阶跃函数时出现警告，

def step_function(x):

return np.array(x > 0, dtype=np.int)

DeprecationWarning: `np.int` is a deprecated alias for the builtin `int`. To silence this warning, use `int` by itself. Doing this will not modify any behavior and is safe. When replacing `np.int`, you may wish to use e.g. `np.int64` or `np.int32` to specify the precision. If you wish to review your current use, check the release note link for additional information.

Deprecated in NumPy 1.20; for more details and guidance: NumPy 1.20.0 Release Notes — NumPy v1.24.dev0 Manual

解决办法：

def step_function(x):

return np.array(x > 0, dtype=np.int64)