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"!)
[plain] view plaincopy
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:
[plain] view plaincopy
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!
======================================
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

Hot AI Tools

Undress AI Tool
Undress images for free

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Integrating Postman applications on CentOS can be achieved through a variety of methods. The following are the detailed steps and suggestions: Install Postman by downloading the installation package to download Postman's Linux version installation package: Visit Postman's official website and select the version suitable for Linux to download. Unzip the installation package: Use the following command to unzip the installation package to the specified directory, for example /opt: sudotar-xzfpostman-linux-x64-xx.xx.xx.tar.gz-C/opt Please note that "postman-linux-x64-xx.xx.xx.tar.gz" is replaced by the file name you actually downloaded. Create symbols

The steps to manually install the plug-in package in VSCode are: 1. Download the .vsix file of the plug-in; 2. Open VSCode and press Ctrl Shift P (Windows/Linux) or Cmd Shift P (Mac) to call up the command panel; 3. Enter and select Extensions:InstallfromVSIX..., then select .vsix file and install. Manually installing plug-ins provides a flexible way to install, especially when the network is restricted or the plug-in market is unavailable, but attention needs to be paid to file security and possible dependencies.

[Common Directory Description] Directory/bin stores binary executable files (ls, cat, mkdir, etc.), and common commands are generally here. /etc stores system management and configuration files/home stores all user files. The root directory of the user's home directory is the basis of the user's home directory. For example, the home directory of the user user is /home/user. You can use ~user to represent /usr to store system applications. The more important directory /usr/local Local system administrator software installation directory (install system-level applications). This is the largest directory, and almost all the applications and files to be used are in this directory. /usr/x11r6?Directory for storing x?window/usr/bin?Many

Setting the location of the interpreter in PyCharm can be achieved through the following steps: 1. Open PyCharm, click the "File" menu, and select "Settings" or "Preferences". 2. Find and click "Project:[Your Project Name]" and select "PythonInterpreter". 3. Click "AddInterpreter", select "SystemInterpreter", browse to the Python installation directory, select the Python executable file, and click "OK". When setting up the interpreter, you need to pay attention to path correctness, version compatibility and the use of the virtual environment to ensure the smooth operation of the project.

The main difference between Java and other programming languages ??is its cross-platform feature of "writing at once, running everywhere". 1. The syntax of Java is close to C, but it removes pointer operations that are prone to errors, making it suitable for large enterprise applications. 2. Compared with Python, Java has more advantages in performance and large-scale data processing. The cross-platform advantage of Java stems from the Java virtual machine (JVM), which can run the same bytecode on different platforms, simplifying development and deployment, but be careful to avoid using platform-specific APIs to maintain cross-platformity.

Understanding Nginx's configuration file path and initial settings is very important because it is the first step in optimizing and managing a web server. 1) The configuration file path is usually /etc/nginx/nginx.conf. The syntax can be found and tested using the nginx-t command. 2) The initial settings include global settings (such as user, worker_processes) and HTTP settings (such as include, log_format). These settings allow customization and extension according to requirements. Incorrect configuration may lead to performance issues and security vulnerabilities.

The installation and configuration of MySQL can be completed through the following steps: 1. Download the installation package suitable for the operating system from the official website. 2. Run the installer, select the "Developer Default" option and set the root user password. 3. After installation, configure environment variables to ensure that the bin directory of MySQL is in PATH. 4. When creating a user, follow the principle of minimum permissions and set a strong password. 5. Adjust the innodb_buffer_pool_size and max_connections parameters when optimizing performance. 6. Back up the database regularly and optimize query statements to improve performance.

Informix and MySQL are both popular relational database management systems. They perform well in Linux environments and are widely used. The following is a comparison and analysis of the two on the Linux platform: Installing and configuring Informix: Deploying Informix on Linux requires downloading the corresponding installation files, and then completing the installation and configuration process according to the official documentation. MySQL: The installation process of MySQL is relatively simple, and can be easily installed through system package management tools (such as apt or yum), and there are a large number of tutorials and community support on the network for reference. Performance Informix: Informix has excellent performance and
