如何在Python 3.4中使用pip 3? [英] How do I use pip 3 with Python 3.4?

问题描述

我的操作系统是 Lubuntu 14.04，默认的Python版本是Python 2.7.6，但是在

My OS is Lubuntu 14.04 and the default Python version is Python 2.7.6, but in

/usr/bin

它说我安装了Python 3.4(当我运行python3 -V时说我安装了Python 3.4.0). Python 3.4是否预装了 pip ?因为当我跑步

it says I have Python 3.4 installed (when I run python3 -V it says I have Python 3.4.0). Does Python 3.4 come with a pre-installed pip? Because when I run

pip -V

在终端上说当前未安装该程序.如此说来，假设我想创建一个使用Python 3.4的 Django 项目. 3:首先下载python3-pip，然后下载virtualenv，然后执行

in a terminal it says that the program is currently not installed. With that said, assume I want to create a Django project which uses Python 3.4.3: do I first download python3-pip and then virtualenv and then do

pip3 install Django==1.8

?还是在我已经安装的Python 3.4中预安装了pip  3?

? or is there a pre-installed pip 3 which comes with Python 3.4 which I already have installed?

推荐答案

而不是通过apt-get或其他方式安装python3-pip(因为回购中的版本太旧)，请下载

Instead of installing python3-pip via apt-get or whatever (because the version in the repo is too old), download get-pip.py, switch to the folder where you saved it, and run

sudo python3 get-pip.py

，它将为您安装最新版本的pip.它可能会创建到pip3的符号链接，但可能不会，我不记得了.

and it will install the latest version of pip for you. It may create a symlink to pip3, it may not, I don't remember.

然后您可以运行

sudo pip install virtualenv

然后使用它来创建您的virtualenv，将其激活，然后使用安装在其中的pip来获取Django.

then use it to create your virtualenv, activate it, then use the pip installed inside it to get Django.

注意:

您可以使用相同的get-pip.py副本为Python 2安装pip.但是，如果要执行此操作，建议您运行

You can use the same copy of get-pip.py to install pip for Python 2. If you want to do that, however, I'd advise you to run

sudo python get-pip.py

运行之前

sudo python3 get-pip.py

如果您安装的是 last ，则将使用pip文件名.我不知道Python 2是否安装了名为pip2的命令(我知道可以通过pip升级pip)，但是在运行Python 2安装后，运行

Whichever one you install last will take the pip filename. I don't know if Python 2 installs a command called pip2 (I know upgrading pip via pip does), but after you run the Python 2 install, run

sudo ln -s /usr/local/bin/pip2.7 /usr/local/bin/pip2

创建pip2别名.然后，您可以运行Python 3安装，该安装将覆盖/usr/local/bin/pip，然后运行

to create a pip2 alias. You can then run the Python 3 install, which will overwrite /usr/local/bin/pip, then run

sudo ln -s /usr/local/bin/pip3.4 /usr/local/bin/pip3

也可以创建一个pip3命令(如果出现文件已存在的错误，那么就可以了).现在，不必在安装到系统site-packages时运行pip并完全不知道要调用哪个版本，而是可以使用pip2和pip3明确声明所需的版本.

to create a pip3 command as well (if you get an error that the file already exists, then you're good to go). Now, instead of running pip when installing to your system site-packages and not knowing exactly which version you're calling, you can just use pip2 and pip3 to explicitly state the version you want.

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