如何在 Ubuntu 18 上为 python 3.7 安装 pip？

How to Install pip for python 3.7 on Ubuntu 18?

提问by ZeCarioca

EDIT 18/02: Since I still don't have a solution, I'm updating with what I know so far.

编辑 18/02：由于我仍然没有解决方案，我正在更新我目前所知道的。

I've installed python 3.7 successfully. I can install modules using pip (or pip3) but those modules are installed in Python 3.6 (Comes with ubuntu). Therefore I can't import those modules in python 3.7 (get a module not found) Python 3.7 doesn't recognize pip/pip3, so I can't install through pip/pip3 I need python 3.7

我已经成功安装了 python 3.7。我可以使用 pip（或 pip3）安装模块，但这些模块安装在 Python 3.6（随 ubuntu 一起提供）中。因此我无法在 python 3.7 中导入这些模块（找不到模块）Python 3.7 无法识别 pip/pip3，所以我无法通过 pip/pip3 安装我需要 python 3.7

--

——

I've installed Python 3.7 on my Ubuntu 18.04 machine. Following this instructions in case it's relevant:

我已经在我的 Ubuntu 18.04 机器上安装了 Python 3.7。如果相关，请按照此说明进行操作：

Download : Python 3.7 from Python Website [1] ,on Desktop and manually unzip it, on Desktop Installation : Open Terminal (ctrl +shift+T)

Go to the Extracted folder
$ cd ~/Desktop/Python-3.7.0
$ ./configure
$ make
$ sudo make install

Making Python 3.7 default Python :

$ sudo vim ~/.bashrc
press i
on the last and new line - Type
alias python= python3.7
press Esc
type - to save and exit vim
:wq
now type
$ source ~/.bashrc

From here: https://www.quora.com/How-can-I-upgrade-Python-3-6-to-3-7-in-Ubuntu-18-04

从 Python 网站 [1] 下载：Python 3.7，在桌面上并手动解压缩，在桌面安装：打开终端 (ctrl +shift+T)

Go to the Extracted folder
$ cd ~/Desktop/Python-3.7.0
$ ./configure
$ make
$ sudo make install

使 Python 3.7 默认 Python ：

$ sudo vim ~/.bashrc
press i
on the last and new line - Type
alias python= python3.7
press Esc
type - to save and exit vim
:wq
now type
$ source ~/.bashrc

从这里：https: //www.quora.com/How-can-I-upgrade-Python-3-6-to-3-7-in-Ubuntu-18-04

I've downloaded several modules through pip install modulebut when I try to import them, I get a ModuleNotFoundError: No module names 'xx'

我已经下载了几个模块，pip install module但是当我尝试导入它们时，我得到了一个ModuleNotFoundError: No module names 'xx'

So I did some research and apparently when used pip to install, it installed in the modules in previous version of Python. Somewhere (probably a question in SO) I found a suggestion to install the module using python3.7 -m pip install modulebut then I get /usr/local/bin/python3.7: no module named pip.

所以我做了一些研究，显然当使用 pip 安装时，它安装在以前版本的 Python 的模块中。在某处（可能是 SO 中的一个问题）我发现了一个使用安装模块的建议，python3.7 -m pip install module但后来我得到了/usr/local/bin/python3.7: no module named pip.

Now I'm stuck, pip is installed, but apparently not for Python 3.7. I'm assuming that if I can install pip for Python 3.7, I can run the pip install command and get the modules I need. If that is the case, how can I install pip for python 3.7, since it's already installed?

现在我被卡住了，pip 已安装，但显然不适用于 Python 3.7。我假设如果我可以为 Python 3.7 安装 pip，我可以运行 pip install 命令并获取我需要的模块。如果是这种情况，我如何为 python 3.7 安装 pip，因为它已经安装了？

回答by mpenkov

The command you're looking for is:

您正在寻找的命令是：

python3.7 -m pip install pip

Took me a surprisingly long time to figure it out, too. The docs about it are here.

我也花了很长时间才弄明白。关于它的文档在这里。

回答by dangel

A quick add-on to mpenkov's answer above(didn't want this to get lost in the comments)

对上面 mpenkov 的回答的快速补充（不想在评论中迷失）

For me, I had to install pip for 3.6 first

对我来说，我必须先为 3.6 安装 pip

sudo apt install python3-pip

now you can install python 3.7

现在你可以安装 python 3.7

sudo apt install python3.7

and then I could install pip for 3.7

然后我可以为 3.7 安装 pip

python3.7 -m pip install pip

and as a bonus, to install other modules just preface with

作为奖励，安装其他模块只需

python3.7 -m pip install <module>

EDIT 1 (12/2019):

编辑 1 (12/2019)：

I know this is obvious for most. but if you want python 3.8, just substitute python3.8in place of python3.7

我知道这对大多数人来说是显而易见的。但如果你想蟒蛇3.8，刚刚替补python3.8代替python3.7

EDIT 2 (5/2020):

编辑 2 (5/2020)：

For those that are able to upgrade, Python 3.8 is available out-of-the-box for Ubuntu 20.04 which was released a few weeks ago.

对于那些能够升级的用户，几周前发布的 Ubuntu 20.04 可以直接使用 Python 3.8。

回答by Tomek Tajne

This works for me.

这对我有用。

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py

curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py

Then this command with sudo:

然后使用 sudo 执行此命令：

python3.7 get-pip.py

python3.7 get-pip.py

Based on this instruction.

基于此指令。

回答by Kealen

I used apt-get to install python3.7 in ubuntu18.04. The installations are as follows.

我在ubuntu18.04中使用apt-get安装python3.7。安装如下。

1. install python3.7

1. 安装python3.7

sudo apt-get install python3.7 

1. install pip3. It should be noted that this may install pip3 for python3.6.

2. 安装pip3。需要注意的是，这可能会为python3.6安装pip3。

sudo apt-get install python3-pip 

1. change the default of python3 for python3.7. This is where the magic is, which will make the pip3 refer to python3.7.

3. 为 python3.7 更改 python3 的默认值。这就是魔法所在，这将使 pip3 引用 python3.7。

sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.7 1

Hope it works for you.

希望对你有效。

回答by S. Brunner

To install all currently supported python versions (python 3.6 is already pre-installed) including pip for Ubuntu 18.04 do the following:

要安装所有当前支持的 python 版本（python 3.6 已经预安装），包括 Ubuntu 18.04 的 pip，请执行以下操作：

To install python3.5 and python3.7, use the deadsnakes ppa:

要安装 python3.5 和 python3.7，请使用 deadsnakes ppa：

sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update
sudo apt-get install python3.5
sudo apt-get install python3.7

Install python2.7 via distribution packages:

通过分发包安装python2.7：

sudo apt install python-minimal  # on Ubuntu 18.04 python-minimal maps to python2.7

To install pip use:

要安装 pip 使用：

sudo apt install python-pip  # on Ubuntu 18.04 this refers to pip for python2.7
sudo apt install python3-pip  # on Ubuntu 18.04 this refers to pip for python3.6
python3.5 -m pip install pip # this will install pip only for the current user
python3.7 -m pip install pip

I used it for setting up a CI-chain for a python project with tox and Jenkins.

我用它为带有 tox 和 Jenkins 的 python 项目设置 CI 链。

回答by bob

Combining the answers from @mpenkon and @dangel, thisis what worked for me:

结合@mpenkon 和@dangel 的答案，这对我有用：

1. sudo apt install python3-pip

2. python3.7 -m pip install pip

1. sudo apt install python3-pip

2. python3.7 -m pip install pip

Step #1 is required (assuming you don't already have pip for python3) for step #2 to work. It uses pip for Python3.6 to install pip for Python 3.7 apparently.

第 1 步是必需的（假设您还没有用于 python3 的 pip）才能使第 2 步工作。它显然使用 Python3.6 的 pip 来安装 Python 3.7 的 pip。

回答by JJP

When i use apt install python3-pip, i get a lot of packages need install, but i donot need them. So, i DO like this:

当我使用时apt install python3-pip，我得到很多需要安装的软件包，但我不需要它们。所以，我喜欢这样：

apt update
apt-get install python3-setuptools
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python3 get-pip.py
rm -f get-pip.py

回答by Anil Konduru

The following steps can be used:

可以使用以下步骤：

sudo apt-get -y update
---------
sudo apt-get install python3.7
--------------
 python3.7
-------------
 curl -O https://bootstrap.pypa.io/get-pip.py
-----------------
sudo apt install python3-pip
-----------------
sudo apt install python3.7-venv
-----------------
 python3.7 -m venv /home/ubuntu/app
-------------
 cd app   
----------------
 source bin/activate

回答by James T

For those who intend to use venv:

对于那些打算使用的人venv：

If you don't already have pipfor Python 3:

如果您还没有pipPython 3：

sudo apt install python3-pip

Install venvpackage:

安装venv包：

sudo apt install python3.7-venv

Create virtual environment (which will be bootstrapped with pipby default):

创建虚拟环境（pip默认情况下将引导）：

python3.7 -m venv /path/to/new/virtual/environment

To activate the virtual environment, sourcethe appropriate script for the current shell, from the bindirectory of the virtual environment. The appropriate scripts for the different shells are:

从虚拟环境source的bin目录中激活虚拟环境，当前 shell 的适当脚本。不同 shell 的适当脚本是：

bash/zsh – activate

bash/zsh – activate

fish – activate.fish

鱼 - activate.fish

csh/tcsh – activate.csh

csh/tcsh – activate.csh

For example, if using bash:

例如，如果使用 bash：

source /path/to/new/virtual/environment/bin/activate

Optionally, to update pipfor the virtual environment (while it is activated):

（可选）更新pip虚拟环境（激活时）：

pip install --upgrade pip

When you want to deactivate the virtual environment:

当您要停用虚拟环境时：

deactivate 

回答by Patrick Conwell

pip3not pip. You can create an alias like you did with python3if you like.

pip3不是pip。python3如果您愿意，您可以像以前一样创建别名。