“brew install"和“brew install"之间有区别吗?和“pip安装"? [英] Is there a difference between "brew install" and "pip install"?

问题描述

我想在我的 Mac 上安装枕头.我有 python 2.7 和 python 3.4，两者都安装了 Homebrew.我尝试了 brew install Pillow 并且效果很好，但仅适用于 python 2.7.我还没有找到为 python 3 安装它的方法.我试过 brew installpillow3 但没有运气.我在 SO 上找到了一篇帖子，说首先用 Homebrew 安装 pip3，然后使用 pip3 install Pillow.碰巧的是，我已经安装了 pip3.

I want to install pillow on my Mac. I have python 2.7 and python 3.4, both installed with Homebrew. I tried brew install pillow and it worked fine, but only for python 2.7. I haven't been able to find a way to install it for python 3. I tried brew install pillow3 but no luck. I've found a post on SO that says to first install pip3 with Homebrew and then use pip3 install pillow. As it happens, I have already installed pip3.

我从来不明白使用 pip 安装 python 包和使用 Homebrew 安装它之间的区别(如果有的话).你能给我解释一下吗?另外，如果有可用的公式，是否最好与 Homebrew 一起安装?如果使用 Homebrew 安装确实更可取，您知道如何使用 Homebrew 为 python 3 安装 pillow 吗?

I've never understood the difference, if any, between installing a python package with pip and installing it with Homebrew. Can you explain it to me? Also, is it preferable to install with Homebrew if a formula is available? If installing with Homebrew is indeed preferable, do you know how to install pillow for python 3 with Homebrew?

第一个答案表明我没有把自己说清楚.如果我用 pip install Pillow 而不是 brew install Pillow 安装了枕头，我的系统上的安装会有什么不同吗?为什么 Homebrew 会制作一个公式来执行 pip 已经做到的事情?它会检查额外的先决条件还是什么?为什么有 python2 的枕头公式，但我不能告诉 python3 的 pillow 公式?

The first answers indicate that I haven't made myself plain. If I had installed pillow with pip install pillow instead of brew install pillow would the installation on my system be any different? Why would Homebrew make a formula that does something that pip already does? Would it check for additional prerequisites or something? Why is there a formula for pillow with python2, but not as far as I can tell for pillow with python3?

推荐答案

好吧，OSX 的包可能包括 Python 的包.

well, packages for OSX may include packages for python.

pip 是 Python 世界的打包器——你应该只能用它来安装 Python 的东西；homebrew 是一个针对 OSX 的包管理器；它不会对您可以使用它安装的软件强加任何限制 - 因为 python 是 软件 的子集.

pip is a packager for the python world - you should only ever be able to install python-things with it; homebrew is a package manager targetted at OSX; it doesn't impose any restrictions onto what software you can install with it - since python is a subset of software.

使用 brew 安装东西会将它们安装到 /usr/local/;

installing things with brew will install them into /usr/local/;

使用 pip 安装东西将从 Python 包索引中获取包，并且它将把它们安装在你的 python 解释器可以找到它们的地方:要么在你的主目录中(例如 ~/.local/lib/python2.7/site-packages/)或在一些全局搜索中-你的python解释器的路径(例如/usr/local/lib/python2.7/dist-packages/)

installing things with pip will fetch packages from the Python Package Index, and it will install them in a place where your python interpreter will find them: either into your home directory (e.g. ~/.local/lib/python2.7/site-packages/) or in some global search-path of your python interpreter (e.g. /usr/local/lib/python2.7/dist-packages/)

如果你已经通过 brew 安装了 python 解释器，那么任何通过 brew 安装的 python 包都可以使用的可能性很高盒子里的.

if you have installed the python interpreter via brew, then chances are high that any python-package installed via brew will be usable out of the box.

这篇关于“brew install"和“brew install"之间有区别吗?和“pip安装"?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！