Pythonbrew Installation and Configuration/macosx

Recently, Python was unusually fond of, after reading the Vamei great God's Python quick tutorial (see the standard library do not want to see), did some leetcode topic familiar with the basic syntax, and then ready to use Scarpy crawl Web pages, and then use collaborate The filler algorithm makes a film recommendation system. Yesterday I learned a day scarpy, today was ready to continue to learn, found a UCB course cs61a, with Python teaching, a full range of teaching video, handouts, homework, lab, final exams have everything. This is opium and opium for my foreign public class control. But the teaching use is Python3, my system environment is python2, and mainly will use this environment. What do we do? Some people say virtual machine, virtual machine Your sister Ah, Occupy memory not to say, and dead card, inconvenient! Baidu, found that there is a method called virtualenv, tutorial in this, there is a need to pick up, below I focus on the second method I use Pythonbrew.

Pythonbrew

Pythonbrew is actually a python sandbox, which can be installed in a variety of Python versions, can temporarily change the environment as needed (in the current terminal)

or change it permanently, or you can turn it off, just use the system environment.

Installation

Execute the following command

CURL-KL http://xrl.us/pythonbrewinstall | bash

Add the following to the~/.bash_profile（没有的话touch一个然后vim改就好咯）

[-S $HOME/.PYTHONBREW/ETC/BASHRC]] && source $HOME/.pythonbrew/etc/basic

Other People's blog useful easy_install or Pip, I tried, after the installation has no corresponding Pythonbrew command (as if only Pythonbrew_install and another has a similar format two commands, executed the former will also show the successful installation of information , but I don't know how to use it)

After success, you will be prompted with the following information

1 well-done! Congratulations!2 3 The pythonbrew is installed as:4     5 /users/dqf/.pythonbrew6 7 Add the following line to the end of your ~/.BASHRC8 9   [[-S "$HOME/.PYTHONBREW/ETC/BASHRC"]] && source "$HOME/.PYTHONBREW/ETC/BASHRC"Ten  OneAfter that, exit the this shell, start a new one,and install some fresh A Pythons: -  -Pythonbrew Install 2.7.2 thePythonbrew Install 3.2 -  -For further instructions,Run: -  + Pythonbrew Help -  + The default Help messages would popup and tell you about do! A  atEnjoy Pythonbrew at/users/dqf/.pythonbrew!!

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This tip is actually a bit of a problem.

Use

• List the versions of Python that can be installed:pythonbrew list --know

• To install a version of Python:pythonbrew install 2.7.3

• To delete a version of Python that is already installed:pythonbrew uninstall 2.7.3

• Lists the installed Python versions (which are marked with an asterisk after the currently used version):pythonbrew list

• Use a version of Python (only the current terminal window is valid):pythonbrew use 2.7.3

• Switch to a version of Python (always valid):pythonbrew switch 2.7.3

• Clean up stale source directories and archive packages:pythonbrew cleanup

• Upgrade to Pythonbrew to the latest version:pythonbrew update

• Disable Pythonbrew (that is, switch back to the original environment):pythonbrew off

• Create a Python isolated environment (with virtualenv):

Pythonbrew venv initpythonbrew venv Create projpythonbrew venv listpythonbrew venv use projpythonbrew venv Delete Projpyth Onbrew venv Rename proj Proj2

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• View Pythonbrew version:pythonbrew version

For more information, please see the pythonbrew Chinese document: Read the docs

/etc/profile,/etc/bashrc,~/.bash_profile,~/.profile,~/.bashrc

I didn't understand it before, and now we've got some information, done some experiments, and finally got a little bit more.

My system is OS X 10.9.4, the result of the test is: For all users, login account (SSH remote login or open terminal in the local) system-level "/etc/profile" and "/ETC/BASHRC" is the inevitable implementation, and is the first execution of two, Then execute "~/.bash_profile" If you enter bash in the terminal, then go to bash to execute ~/.BASHRC.

Of course, there are many shells under the Mac, such as ZSH, its configuration file is ~/.ZSHRC (not found?? Touch a chant)

First say so much, feel the shell is quite interesting, since the change of Mac, the enthusiasm for learning new technology has also soared a lot of

Pythonbrew Installation and Configuration/macosx