“python_requires” should be set with “>=3.5”, as Jpype1 1.3.0 is not compatible with all Python versions.

Currently, the keyword argument **python_requires** of **setup()** is not set, and thus it is assumed that this distribution is compatible with all Python versions. 

However, I found the following code checking Python compatibility locally in **setup.py**

```python

if sys.version_info[0] < 3 and sys.version_info[1] < 5:

    raise RuntimeError("JPype requires Python 3.5 or later")

```

I think it is a better way to declare Python compatibility by using the keyword argument **python_requires** than checking compatibility locally for some reasons:

* Descriptions in **python_requires** will be reflected in the metadata

* “pip install” can check such metadata on the fly during distribution selection, and prevent from downloading and installing the incompatible package versions. 

* If the user does not specify any version constraint, pip can automatically choose the latest compatible package version for users.



Way to improve:

modify **setup()** in **setup.py,** add **python_requires** keyword argument:

```python

setup(…

     python_requires=">=3.5",

     …)

```

Thanks for your attention.

Best regrads,

PyVCEchecker

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