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Deprecated Library
------------------
Deprecated is Easy to Use
`
If you need to mark a function or a method as deprecated,
you can use the ``@deprecated`` decorator:
Save in a hello.py:
.. code:: python
    from deprecated import deprecated
    @deprecated(version='1.2.1', reason="You should use another function")
    def some_old_function(x, y):
        return x + y
    class SomeClass(object):
        @deprecated(version='1.3.0', reason="This method is deprecated")
        def some_old_method(self, x, y):
            return x + y
    some_old_function(12, 34)
    obj = SomeClass()
    obj.some_old_method(5, 8)
And Easy to Setup
`
And run it:
.. code:: bash
    $ pip install Deprecated
    $ python hello.py
    hello.py:15: DeprecationWarning: Call to deprecated function (or
staticmethod) some_old_function.
    (You should use another function) -- Deprecated since version 1.2.0.
      some_old_function(12, 34)
    hello.py:17: DeprecationWarning: Call to deprecated method
some_old_method.
    (This method is deprecated) -- Deprecated since version 1.3.0.
      obj.some_old_method(5, 8)
You can document your code
``
Have you ever wonder how to document that some functions, classes, methods,
etc. are deprecated?
This is now possible with the integrated Sphinx directives:
For instance, in hello_sphinx.py:
.. code:: python
    from deprecated.sphinx import deprecated
    from deprecated.sphinx import versionadded
    from deprecated.sphinx import versionchanged
    @versionadded(version='1.0', reason="This function is new")
    def function_one():
        '''This is the function one'''
    @versionchanged(version='1.0', reason="This function is modified")
    def function_two():
        '''This is the function two'''
    @deprecated(version='1.0', reason="This function will be removed soon")
    def function_three():
        '''This is the function three'''
    function_one()
    function_two()
    function_three()  # warns
    help(function_one)
    help(function_two)
    help(function_three)
The result it immediate
```
Run it:
.. code:: bash
    $ python hello_sphinx.py
    hello_sphinx.py:23: DeprecationWarning: Call to deprecated function (or
staticmethod) function_three.
    (This function will be removed soon) -- Deprecated since version 1.0.
      function_three()  # warns
    Help on function function_one in module __main__:
    function_one()
        This is the function one
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