在 Python 中，我如何测试解释器是否是运行 Pyston、Jython、CPython？

Question

如果解释器是运行 pyston、jython、ironpython、pypy 等，我想从运行 Python 程序内部进行测试。

我想到的是 system.version 上的模式匹配和检查 imp.get_magic() 中的幻数，但这两个看起来都有些脆弱和老套。还有其他建议吗？

编辑： user2357112 再次出现。

我在我安装的每个 Python 版本上都尝试了运行以下代码，这区分了 Jython、Pyston 和各种 CPython。它倒下的地方是2.6之前的Python，CPython的anaconda变体。对于 anaconda 来说，这可能是正确的。

这是程序和结果。请随意注意哪些其他类型的 Python 这适用于或不适用于。

import platform
print(platform.python_implementation())

和shell脚本：

for v in $(pyenv versions); do # not quite right
    pyenv local $v
    echo "version is $v"
    python /tmp/foo.py
    echo "==================="
done

我得到了这个输出：

===================
version is 2.1.3
Traceback (most recent call last):
  File "/tmp/foo.py", line 1, in ?
    import platform
ImportError: No module named platform
===================
version is 2.2.3
Traceback (most recent call last):
  File "/tmp/foo.py", line 1, in ?
    import platform
ImportError: No module named platform
===================
version is 2.3.7
Traceback (most recent call last):
  File "/tmp/foo.py", line 2, in ?
    print(platform.python_implementation())
AttributeError: 'module' object has no attribute 'python_implementation'
===================
version is 2.4.6
Traceback (most recent call last):
  File "/tmp/foo.py", line 2, in ?
    print(platform.python_implementation())
AttributeError: 'module' object has no attribute 'python_implementation'
===================
version is 2.5.6
Traceback (most recent call last):
  File "/tmp/foo.py", line 2, in <module>
    print(platform.python_implementation())
AttributeError: 'module' object has no attribute 'python_implementation'
===================
version is 2.6.9
CPython
===================
version is 2.7.12
CPython
===================
version is 2.7.13
CPython
===================
version is 2.7.8
CPython
===================
version is 3.0.1
CPython
===================
version is 3.1.5
CPython
===================
version is 3.2.6
CPython
===================
version is 3.3.5
CPython
===================
version is 3.3.6
CPython
===================
version is 3.4.2
CPython
===================
version is 3.5.0
CPython
===================
version is 3.5.1
CPython
===================
version is 3.5.2
CPython
===================
version is 3.6.0
CPython
===================
version is 3.6.0a4
CPython
===================
version is 3.6.0b2
CPython
===================
version is 3.6.1
CPython
===================
version is 3.6.2
CPython
===================
version is 3.7-dev
CPython
===================
version is anaconda2-4.1.1
CPython
===================
version is anaconda3-4.1.0
CPython
===================
version is jython-2.7.1b3
Jython
===================
version is pypy2-5.4.1
PyPy
===================
version is pypy2-5.6.0
PyPy
===================
version is pypy-2.6.1
PyPy
===================
version is pypy3-2.3.1
PyPy
===================
version is pypy3-2.4.0
PyPy
===================
version is pypy3.5-5.8.0
PyPy
===================
version is pypy-5.0.1
PyPy
===================
version is pypy-5.3.1
PyPy
===================
version is pyston-0.6.0
Pyston
===================
version is pyston-0.6.1
Pyston
===================

Answer 1

如 user2357112 所述，您可以检查 platform.python_implementation() == "Pyston"，如您在 source.

中所见

Answer 2

在 Pyston 2.2 中 platform.python_implementation() 不起作用。这是我在 lib/pyston3.8/platform.py:

中看到的内容

def python_implementation():

""" Returns a string identifying the Python implementation.

    Currently, the following implementations are identified:
      'CPython' (C implementation of Python),
      'IronPython' (.NET implementation of Python),
      'Jython' (Java implementation of Python),
      'PyPy' (Python implementation of Python).

"""
return _sys_version()[0]

因此，回退到已接受答案中引用的来源背后的代码将起作用：

import sys
"Pyston" in sys.version

我为此 here 提交了一个问题。

在 Python 中，我如何测试解释器是否是 运行 Pyston、Jython、CPython？

In Python how do I test if the interpreter is running Pyston, Jython, CPython?

python

pypy

jython

anaconda

在 Python 中，我如何测试解释器是否是运行 Pyston、Jython、CPython？