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Today, I will talk to you about how developers can quickly get started with Python. Many people may not know much about it. In order to make you understand better, the editor summarized the following contents. I hope you can get something from this article.

There is no doubt that Python is a good language. Python has always been known for its simplicity, convenience and power. It is easy to use and easy to use. The standard library and PyPI third-party library have rich and useful resources to quickly solve developers' problems without having to repeat wheels. These excellent features make python more and more popular in recent years. In fact, python has been used abroad for several years. The most important thing is that the father of python went to work in Google, and the promotion of python is very great, such as Youtube and Facebook are using python in large quantities, and more and more companies are gradually using python, and the community environment is very good, with a large number of open source software and rich resources, they can quickly start to solve a lot of problems and be respected by everyone. Mr. Liang Changtai, my mentor, recommended me to learn python in 2009. Because I only read some grammatical scratches at that time, and there were no books and works that were particularly good for entry, I ran aground.

2013 has to be said to be the year of python, because the whole python ecosystem is good, there are websites like Douban and Zhihu with relatively large visits in China, which also proves the maturity of python technology in China. In addition, the introduction course of MIT computer Department * has been changed to python. Together, these factors make most people start to learn python crazily. New projects within big companies, the operation and maintenance platform and Openstack have made python very popular. As most of the servers now use the linux operating system, and linux installs python by default, coupled with the powerful processing of python's operating system, many operation and maintenance students can't put it down. I also follow this trend from operation and maintenance development to a python developer.

Some people will ask what python can do. To put it bluntly, Python is capable of anything. C is limited by low-level syntax and has a long development cycle, so it is generally used to develop software with high performance requirements. Java focuses on enterprise development, and the slow startup speed of JVM makes Java unsuitable for developing system management scripts. And Python is really a generalist and can be used in many places. Nowadays, many fields are used, such as scientific computing, data analysis, cloud computing (openstack), operation and maintenance platform and automated operation and maintenance (saltstack), web and so on.

Python continues to be furious this year, and a large company has offered a price of 20-30w, which makes the author very greedy. In fact, the domestic use of python is still around the direction of python web, and we can draw a conclusion from the recruitment website. Django, tornado, Flask and bottle are all skills that need to be mastered in most recruitment requirements, so if you want to find a good job in python, you must contact the web framework. Django still occupies more than 90% of the position in recruitment, it seems that there are still many people who favor him in this mature framework, and there are still a lot of people who like to use him because they have been tested and stable, although the community seldom talks about Django.

For the study of python, there are still many books, students with no programming experience can go to see "head first python" and "think python", want to quickly get started with the "concise python tutorial" is the most direct and rude, Mr. Liao Xuefeng in his official website also launched a python tutorial, very good can also get started quickly. Later, you can buy a "python Learning Manual" and "python Core programming" to slowly taste. Basic learning these books can improve your python ability, the most distressing should be python web learning, especially for students with no programming experience. There are really no particularly good tutorials for python web, we can only start with the documentation of a framework, so it will be quite difficult to start.

Let's simply configure the environment of DJango to provide a simple web for you to get started.

First install the Django program:

Pip install Django

Then we build a new Django project, hello.

Django-admin.py startproject hello

Go to the hello directory and tree to see the structure.

.

├── hello project directory

│ ├── _ _ init__.py treats this directory as a development package

│ ├── settings.py Django Settings File

│ ├── urls.py routing url Settings File

│ └── wsgi.py wsgi profile

└── manage.py Command tool

Run our Django server:

Python manage.py runserver

According to the prompt, we can visit http://127.0.0.1:8000/ to view the results.

Ok! Get this prompt to indicate that it has been started successfully!

Then we see that this is a page that shows the server running, and we want to try to modify it to show what we want.

We go to the hello directory, create the views.py file, and type the code:

From django.http import HttpResponse def hello (request): return HttpResponse ("Hello world!")

OK, after the input is completed and saved, let's analyze the meaning of this code. The * line introduces the HttpResponse function in the django project, and then we create a hello function, and the hello function returns the Hello World string using HttpResponse. This Hello World can be changed to what we want to display on the web page.

However, modifying these will not achieve our purpose. We must assign the home page of the website to this function, so we need to modify the urls.py file and add the following code:

From hello.views import hello urlpatterns = patterns ("", ('^ $', hello),)

The * line introduces the hello function in views that we just created, which is to output the result we want.

Then there is to modify the url route, ^ means the beginning $means the end, sandwiched between is the path to access, for example: ^ admin/$ means to access the http://127.0.0.1:8000/admin/ path (note * /), ^ $means to visit http://127.0.0.1:8000 means that there is nothing behind. What follows ^ $is the hello function, which means to access the

Http://127.0.0.1:8000 goes to find the following hello function, and the hello function return is Hello world! So our page will show Hello world! String.

After saving, refresh the browser to see the following results:

Ok, one Hello World will do it.

After reading the above, do you have any further understanding of how developers can get started with Python quickly? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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