Install python software package under Linux

A novice has just started learning Python and is currently studying "Learning python the stupid way" ~

When learning exercise 46, you need to install several software packages: pip, nose, virtualenv, distribute! Record the installation of python software packages under Linux here Method:

1. First, what did we just pip?

We can see on pip's python official website that pip is "A tool for installing and managing Python packages." That is to say, pip is a software installation tool for python. Here is how to use pip:

Installation package:

pip install SomePackage

Check which files were installed when installing the package:

pip show --files SomePackage
Check which packages have been updated:

pip show --files SomePackage
Update a software:

pip install --upgrade SomePackage
Uninstall software:

pip uninstall SomePackage
So, with pip we can automatically install other software packages, such as nose, virtualenv, and distribute that we need.

2. Install the pip package

Download the pip package (pip-1.4.1.tar.gz) on the pip python homepage above, use "tar -xvf pip-1.4.1.tar.gz" to unzip it, cd into the folder and use the "python setup.py install" command to install the software. (If you don’t want to use pip to install the software package, you can also use this method to download, unzip and install it using "python setup.py install"!)

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dslab@wheezy:/tmp/pip- 1.4.1$ tar -xvf pip-1.4.1.tar.gz

dslab@wheezy:/tmp/pip-1.4.1$ cd pip-1.4.1/

dslab@wheezy:/tmp/pip-1.4 .1$ sudo python setup.py install

[sudo] password for dslab:

Traceback (most recent call last):

File "setup.py", line 5, in

from setuptool s import setup, find_packages

ImportError: No module named setuptools

When installing pip, it prompts that the module in setuptools is used in setup.py, but the setuptools package is not installed on the computer, so we need to download and install setuptools first!

3. Install the setuptools software package

You can first open the python official website of setuptools to see how to install the setuptools software package:

> wget https://bitbucket.org/pypa/setuptools/raw/bootstrap/ ez_setup.py
> python ez_setup.py --user

You can also download the setuptools package and install it:

(1) Download the setuptools package
# wget http://pypi.python.org/packages/source /s/setuptools/setuptools-2.0.tar.gz
(2) Decompress the setuptools package
# tar zxvf setuptools-2.0.tar.gz
# cd setuptools-2.0
(3) Compile setuptools
# python setup.py build
(4) Start executing setuptools installation
# python setup.py install

4. Install pip again, and use pip to install other software packages

Now that setuptools has been installed, we enter the pip-1.4.1 directory again, Use the “python setup.py install” command to install pip:

dslab@wheezy:/tmp$ cd pip-1.4.1/
dslab@wheezy:/tmp/pip-1.4.1$ sudo python setup.py install
. ..

After installing pip, we can directly use pip to install other software packages:

sudo pip install nose

sudo pip install virtualenv

sudo pip install distribute

But if you use pip to install at this time The following error occurred when using the software:

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dslab@wheezy:/tmp/pip-1.4.1$ sudo pip install nose

sudo: pip: command not found

Instructions for installing pip above Still having problems, I found a solution online:

dslab@wheezy:/tmp/pip-1.4.1$ cd ..
dslab@wheezy:/tmp$ sudo easy_install pip-1.4.1/
...

Note: In fact, I don’t know why there is an error when using "sudo python setup.py install". I installed it smoothly on my desktop computer, but there are problems when installing it on my laptop! Installation using "sudo easy_install pip-1.4.1/" is normal!

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Reference:

【1】Official Documentation is always the best, so if you want to install any software, it is best to open the official website and take a look (the official python website of several software packages has been added above)

【2】http://www.pythontab. com/html/2012/pythongaoji_1220/21.html

【3】http://stackoverflow.com/questions/9780717/bash-pip-command-not-found