Python backend web development with Django is a popular choice for developers looking to build powerful and scalable web applications. In this tutorial, we will cover all the essentials of creating a backend web application using Python and Django.
Before we begin, make sure you have Python and Django installed on your system. You can install Python from the official website (https://www.python.org/) and Django using pip by running the following command:
pip install django
Once you have installed Python and Django, let’s create a new Django project by running the following command in your terminal:
django-admin startproject myproject
This will create a new Django project named myproject in your current directory. Navigate to the project directory by running:
cd myproject
Next, let’s create a new Django app within our project. Django apps are modules that provide specific functionality to your web application. To create a new app, run the following command:
python manage.py startapp myapp
Replace myapp with the name of your app. Once the app is created, you need to add it to the INSTALLED_APPS list in the settings.py file within your project directory. Open the settings.py file and add the following line to the INSTALLED_APPS list:
INSTALLED_APPS = [
...
'myapp',
]
Now that we have our project and app set up, let’s create our first view. Views in Django are Python functions that take in a web request and return a web response. Create a new file named views.py within your app directory and add the following code:
from django.http import HttpResponse
def home(request):
return HttpResponse("Hello, World!")
Next, we need to create a URL pattern for our view. Create a new file named urls.py within your app directory and add the following code:
from django.urls import path
from . import views
urlpatterns = [
path('', views.home, name='home'),
]
Now, we need to include our app’s urls in the main project urls.py file. Open the urls.py file within your project directory and add the following code:
from django.contrib import admin
from django.urls import path, include
urlpatterns = [
path('', include('myapp.urls')),
path('admin/', admin.site.urls),
]
Finally, run the development server by running the following command:
python manage.py runserver
Open your web browser and navigate to http://127.0.0.1:8000/. You should see the message "Hello, World!" displayed on the page.
Congratulations! You have successfully created a basic Django backend web application using Python. There are many more advanced features and concepts in Django that you can explore, such as models, forms, authentication, and more. I encourage you to dive deeper into the Django documentation to learn more about how to build powerful and scalable web applications with Python.
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# Basic Calculator Program
# Global Variables
attempt = 0
maxAttempt = 5
# Calculator function
# Parameters as local variables
def calculator(numb1, operator, numb2):
if operator == "+":
result = numb1 + numb2
print(f"nTotal: {str(result)}")
elif operator == "-":
result = numb1 – numb2
print(f"nTotal: {str(result)}")
elif operator == "*":
result = numb1 * numb2
print(f"nTotal: {str(result)}")
elif operator == "/":
# If the user inputs 0 when the operator is "/"
if numb2 == 0:
print("Error: Division by zero is not allowed!")
else:
result = numb1 / numb2
print(f"nTotal: {str(result)}")
else:
return False
return True
while attempt < maxAttempt:
number1 = int(input("Enter your first number: "))
selectOperator = input("| + | – | * | / |: ")
number2 = int(input("Enter your second number: "))
# Repeat user input loop if the operator is correct
if calculator(number1, selectOperator, number2):
continue
# Increment attempt variable by 1
else:
print(f"Invalid operator! Use this format: | + | – | * | / |")
attempt += 1
# Error message when maxAttempt is reached. The program will close
if attempt == maxAttempt:
print("nMax attempts reached.")
This is what I learned from this tutorial so far. Still learning
Huge respect to the team putting their efforts to compile this tutorial
👏👏👏
Thank you
Your anti imperialist lists are a great part of this course.
02:05:16 hahaha
the error am getting when i refresh a page after submitting the
form ValueError at /location/
The view location.views.register_location didn't return an HttpResponse object. It returned None instead. i get this error when i refresh a page
When I press on the link to get the cheat sheet, it just tells me to add my name and email and then nothing happens
Can someone please help me
the best course so far ! no stupid theorie just pure pratique and understanding
Wow
Guys i am new to coding. Could someone tell me if this course teaches us to build REST API
Big thanks to you and Tomi for real i have wandering around trying other tutorials that claim to teach from scratch but they lie. Now am happy i can create a website with login and database and can allow me to post things. Big thanks to Tomi too
iam not getting the file name in the step mkvirtualenv myapp step??? can anyone tell what to do with this step?? please
Thanks so much, you are there for the good of everyone.
at 26:00 lol
Im so happy i can hear a Nigerian's voice. God bless you
Love u man
I finally complete the course and learned a lot