为 python3 创建别名
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creating an alias for python3
提问by Cindy
I have python2.6.6 installed in my system. Now I am trying to use python3 while keeping all the python2.6.6 untouched in /usr/bin/. I am able to install python3 in /opt/python35/bin/. By adding export PATH=/opt/python35/bin/:$PATHto the ~/.bashrc file, I am able to access python3 anywhere in my console.
我的系统中安装了 python2.6.6。现在我正在尝试使用 python3，同时在 /usr/bin/ 中保持所有 python2.6.6 不变。我可以在 /opt/python35/bin/ 中安装 python3。通过添加export PATH=/opt/python35/bin/:$PATH到 ~/.bashrc 文件，我可以在控制台的任何地方访问 python3。
My question is: how could I set an alias (python) for python3 so that, whenever I issue command "python", python3 in /opt/python35/bin/ could be used? I simply couldn't remove python2.6.6 in my system due to some already installed programs in my system.
我的问题是：如何为 python3 设置别名（python），以便在我发出命令“python”时，可以使用 /opt/python35/bin/ 中的 python3？由于我的系统中已经安装了一些程序，我根本无法删除系统中的 python2.6.6。
My current approach is to add a line in the ~/.bashrc file, alias python = "/opt/python35/bin/python3"or simply alias python = "python3". However, when I reload this ~/.bashrc file, I got the following error:
我目前的方法是在 ~/.bashrc 文件中添加一行，alias python = "/opt/python35/bin/python3"或者简单地添加alias python = "python3". 但是，当我重新加载这个 ~/.bashrc 文件时，出现以下错误：
$ source ~/.bash_profile
bash: alias: python: not found
bash: alias: =: not found
bash: alias: /opt/python35/bin/python3: not found
Does anybody know where my problem is? Thanks in advance!
有人知道我的问题出在哪里吗？提前致谢！
回答by KIDJourney
in your .bashrc
在你的 .bashrc
add
添加
alias python='python3'
In bash script , you can't insert space beside =.
在 bash script 中，您不能在=.
回答by neuhaus
Spaces are not allowed next to the equal sign when declaring aliases.
声明别名时，等号旁边不允许有空格。
Use
用
alias python=python3
and it should work.
它应该工作。
