python - 如何检查正在运行脚本的Python版本？(How do I check what version of Python is running my script?)

Question

如何检查正在解释脚本的版本的Python Interpreter？

  ask by carrier translate from so

Answer 1

This information is available in the sys.version string in the sys module:

(sys模块的sys.version字符串中提供了此信息：)

>>> import sys

Human readable:

(可读性：)

>>> print(sys.version)  # parentheses necessary in python 3.       
2.5.2 (r252:60911, Jul 31 2008, 17:28:52) 
[GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)]

For further processing:

(进行进一步处理：)

>>> sys.version_info
(2, 5, 2, 'final', 0)
# or
>>> sys.hexversion
34014192

To ensure a script runs with a minimal version requirement of the Python interpreter add this to your code:

(为了确保脚本以Python解释器的最低版本要求运行，请将其添加到您的代码中：)

assert sys.version_info >= (2, 5)

This compares major and minor version information.

(这将比较主要版本和次要版本信息。)

Add micro (= 0 , 1 , etc) and even releaselevel (= 'alpha' , 'final' , etc) to the tuple as you like.

(添加微（= 0 ， 1 ，等等），甚至releaselevel（= 'alpha' ， 'final'等），以该元组作为你喜欢。)

Note however, that it is almost always better to "duck" check if a certain feature is there, and if not, workaround (or bail out).

(但是请注意，最好总是“躲避”检查某个功能是否存在，如果没有，请采取变通方法（或纾困）。)

Sometimes features go away in newer releases, being replaced by others.

(有时，某些功能在较新的版本中会消失，而被其他功能取代。)