[Cloud9] Try to build an environment with django 1.11 of Python 3.4 without understanding even 1 mm

Purpose of this article

Python? django? Environment construction? Correct understanding?

** I want to use django for the time being! !! !! !! (ˇΩˇ) **

Even though I am motivated, I can't stumble when building an environment! So, I will send you the environment construction without understanding even 1 mm from me on the first day of Python history and django history.

If you read the correct document

https://docs.djangoproject.com/en/1.11/intro/tutorial01/ At the moment, 1.11 is the latest in django, but if it's updated in the future, change the URL above to something like 1.12 and that's the latest documentation. that's all.

Building a local environment?

If you read the document, you'll understand it, it's too much to throw at you, so let's explain it. But I won't go into the details. I can not do it! !! Python formula or ANACONDA You can create an environment to run Python locally, but

--Heavy ――Unexpectedly, it takes time ――I don't really understand

People who are new to Python will surely be like this.

For the time being, let's start from the place where you register with Cloud9

--No installation required --Just register ――Various environments are in place --Easy to deploy!

** So let's use Cloud9 ! !! ** **

django, make a workspace

When you log in to Cloud9, you will access the following page. Let's create a workspace with [Create a new workspace].

Then you will be taken to the following page, so select the Workspace Name ** "mysite" ** from the template below, ** "django" ** from the template below, and press [Create workspace]. ..

Check Python and django versions

Once the workspace is created, the screen will change to the one shown below.

Well, the first thing to do is to check the version. The official documentation assumes ** Python 3.4 or higher and django 1.11 **. Let's check the version by entering the following in bash.

`bash`


python --version
python -m django --version

Execution result Yes old, yes sieve. So I will raise the version.

Raise the version of Python and django

Let's do the following in bash without thinking.

Symbolic link to Python3

`bash`


sudo mv /usr/bin/python /usr/bin/python2
sudo ln -s /usr/bin/python3 /usr/bin/python
python --version

Execution result

Reinstall django

`bash`


sudo pip3 install django
python -m django --version

Execution result The prerequisites are now in place! Next, let's create an application.

Creating an application

Run the following to create an application called "polls".

`bash`


python manage.py startapp polls

Execution result As mentioned above, a folder called "polls" and various files are created directly under it. This completes the application creation!

Rewrite View

This also follows the official documentation and modifies views.py as follows:

`polls/views.py`


from django.http import HttpResponse


def index(request):
    return HttpResponse("Hello, world. You're at the polls index.")

This is all you need for the view part!

Rewrite urls.py

Just follow the official documentation! Even so, why don't you read it through to Tekito? So let's read the document properly!

Create urls.py directly under polls folder

Right-click on the polls folder to display various context menus, so select [New File] in it. Since a new file will be created, name it [urls.py] and copy and paste the following

`polls/urls.py`


from django.conf.urls import url

from . import views

urlpatterns = [
    url(r'^$', views.index, name='index'),
]

Rewrite urls.py on the project side

`mysite/urls.py`


from django.conf.urls import include, url
from django.contrib import admin

urlpatterns = [
    url(r'^polls/', include('polls.urls')),
    url(r'^admin/', admin.site.urls),
]

Try to run

If you can do it so far, let's actually move it. Click [Run Project] in the upper right.

The following log should be spit out

The URL is output when the project is executed. In this case, it is the following URL. Please try to access it. https://mysite-karimata.c9users.io

When I fly ... that? can not fly?

That should be it. This time I made a page called "polls". Try adding "polls" to the end of the URL (https://mysite-karimata.c9users.io/polls/). Then ...! Yes, I was able to display it! For the time being, the minimum environment has been created! We did it, Tae-chan! You can do Python!

Summary

If you follow the above flow, you can build an environment using django without really understanding even 1 mm. As I will learn the details one by one, ** I can move it first! Let's enter from ** and lower the psychological barrier!

Have a good Python life!