如何检查哪个版本的Python解释器正在运行我的脚本?
当前回答
我喜欢系统。对于这样的东西。
>>> import sys
>>> sys.hexversion
33883376
>>> '%x' % sys.hexversion
'20504f0'
>>> sys.hexversion < 0x02060000
True
其他回答
所有的答案都有深刻的见解
另一种方法是platform.python_version_tuple()
python3 -c “import platform; print(platform.python_version_tuple())”
(‘3’, ‘6’, ‘8’)
从命令行(注意大写的“V”):
python -V
这在“man python”中有记录。
从IPython控制台
!python -V
只是为了好玩,下面是在CPython 1.0-3.7b2, Pypy, Jython和Micropython上的一种方法。在现代代码中,这更像是一种新奇的做法。我将其作为http://stromberg.dnsalias.org/~strombrg/pythons/的一部分编写,这是一个脚本,用于在多个版本的python上同时测试一段代码,因此您可以轻松地了解哪些python特性与哪些版本的python兼容:
via_platform = 0
check_sys = 0
via_sys_version_info = 0
via_sys_version = 0
test_sys = 0
try:
import platform
except (ImportError, NameError):
# We have no platform module - try to get the info via the sys module
check_sys = 1
if not check_sys:
if hasattr(platform, "python_version"):
via_platform = 1
else:
check_sys = 1
if check_sys:
try:
import sys
test_sys = 1
except (ImportError, NameError):
# just let via_sys_version_info and via_sys_version remain False - we have no sys module
pass
if test_sys:
if hasattr(sys, "version_info"):
via_sys_version_info = 1
elif hasattr(sys, "version"):
via_sys_version = 1
else:
# just let via_sys remain False
pass
if via_platform:
# This gives pretty good info, but is not available in older interpreters. Also, micropython has a
# platform module that does not really contain anything.
print(platform.python_version())
elif via_sys_version_info:
# This is compatible with some older interpreters, but does not give quite as much info.
print("%s.%s.%s" % sys.version_info[:3])
elif via_sys_version:
import string
# This is compatible with some older interpreters, but does not give quite as much info.
verbose_version = sys.version
version_list = string.split(verbose_version)
print(version_list[0])
else:
print("unknown")
最简单的方法
只需在终端中输入python,就可以看到版本 就像下面这样
desktop:~$ python
Python 2.7.6 (default, Jun 22 2015, 18:00:18)
[GCC 4.8.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>
有六个模块,你可以做到:
import six
if six.PY2:
# this is python2.x
else:
# six.PY3
# this is python3.x
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