[英]Trying to install Python3 using brew
Trying to install Python3 in mac using below command : 尝试使用以下命令在mac中安装Python3:
brew install python3
When i run the command getting below error : 当我运行命令得到以下错误:
Error: python 2.7.14_2 is already installed
To upgrade to 3.6.5, run `brew upgrade python`
How to keep both python2 and python3 in mac without upgrading... 如何在没有升级的情况下将python2和python3保存在mac中...
Thanks! 谢谢!
The python
formula is assumed by Homebrew to be Python 3. The formula python3
is thus an alias for python
. Homebrew假设
python
公式为Python 3.因此公式python3
是python
的别名。
You need to: 你需要:
brew upgrade python
, as told by the error message. brew upgrade python
错误消息告诉brew upgrade python
。 It will switch your default Homebrew Python from 2 to 3. brew install python@2
. brew install python@2
。 It will install Python 2 alongside Python 3. Note however that even with Python 3 installed (using the formula called python
), the command python
still points to Python 2. You need to either type python3
to run Python 3, or add Homebrew's Python 3 unprefixed bin
directory at the beginning of your $PATH
: 但请注意,即使安装了Python 3(使用名为
python
的公式),命令python
仍然指向Python 2.您需要输入python3
来运行Python 3,或者在$PATH
的开头添加Homebrew的Python 3前缀bin
目录。 $PATH
:
export PATH="$(brew --prefix python)/libexec/bin:$PATH"
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