让IPython使用Python 3而不是Python 2运行
我安装了Python2和Python3,但当我从终端使用让IPython使用Python 3而不是Python 2运行,python,python-3.x,ipython,Python,Python 3.x,Ipython,我安装了Python2和Python3,但当我从终端使用IPython运行IPython时,它会启动Python2。如何让IPython运行Python 3呢?在IPython引用中,它说您只需要从终端使用命令ipython3,但这不起作用。这个问题似乎在Stackoverflow的其他地方被问到,但我看不到一个非常明确的答案。您需要为python3安装ipython,您可以使用pip: pip3 install ipython 然后要启动ipython2shell,只需键入ipython2,
IPython
运行IPython时,它会启动Python2。如何让IPython运行Python 3呢?在IPython引用中,它说您只需要从终端使用命令ipython3
,但这不起作用。这个问题似乎在Stackoverflow的其他地方被问到,但我看不到一个非常明确的答案。您需要为python3安装ipython,您可以使用pip:
pip3 install ipython
然后要启动
ipython2
shell,只需键入ipython2
,对于ipython3
使用ipython3
卸载然后重新安装我的所有ipython:
卸载:
brew uninstall ipython ## had a version installed w/ brew on my machine
pip2 uninstall ipython
pip3 uninstall ipython
使用pip2和pip3重新安装:
pip2 install ipython
pip3 install ipython
现在我知道ipython2
开始于2.7版,而ipython
开始于3.6版:
mustache:~ r8t$ ipython
Python 3.6.5 (default, Apr 25 2018, 14:26:36)
Type 'copyright', 'credits' or 'license' for more information
IPython 6.4.0 -- An enhanced Interactive Python. Type '?' for help.
In [1]: exit()
mustache:~ r8t$ ipython2
Python 2.7.15 (default, May 1 2018, 16:44:37)
Type "copyright", "credits" or "license" for more information.
IPython 5.7.0 -- An enhanced Interactive Python.
? -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help -> Python's own help system.
object? -> Details about 'object', use 'object??' for extra details.
你安装了ipython3吗
pip3安装ipython
?如果您第一次安装ipython
时有Python2,即使您以后安装Python3,它也将使用Python2运行。也许会有帮助。更改系统python环境路径。@SDilmac,你为什么建议这样做?@dsaxton,pip3安装ipython
,然后只需使用ipython
或ipython3
,不需要做任何其他事情。设置ipython
将实际为您提供最近安装的版本。在OSX中,我无法使用ipython3启动py3版本,如何解决这个问题?