📅 最后修改于: 2023-12-03 15:03:28.024000 🧑 作者: Mango
Pallister is a free and open-source library for building web applications using Python. It is based on the WSGI interface and can be used with any WSGI-compatible web server. Pallister provides a simple and intuitive API for handling HTTP requests and responses, handling routing, and rendering templates.
To install Pallister, you can use pip:
$ pip install pallister
Here is an example of a simple web application with Pallister:
from pallister import Pallister
app = Pallister()
@app.route('/')
def hello_world(request):
return 'Hello, world!'
if __name__ == '__main__':
app.run()
In this example, we create a new Pallister object and define a single route handler for the / route. When this route is requested, the hello_world() function is called, which returns a string to be displayed in the browser.
You can start the application by running the script:
$ python app.py
And then open http://localhost:8000/ in your browser to see the "Hello, world!" message.
Pallister's routing system allows you to define routes that are matched based on regular expressions. For example:
@app.route(r'/name/(\w+)')
def hello_name(request, name):
return f'Hello, {name}!'
In this example, we define a route for /name/{name}, where {name} can be any sequence of word characters. The route handler function hello_name() is called with the name argument extracted from the route.
Pallister uses the Jinja2 templating engine to render templates. Templates can have variables, control structures, and inheritance, making it easy to create complex HTML pages. For example:
from pallister import render_template
template = '''
<!DOCTYPE html>
<html>
<head>
<title>{{ title }}</title>
</head>
<body>
<h1>{{ message }}</h1>
</body>
</html>
'''
@app.route('/')
def hello_world(request):
context = {'title': 'Hello, world!', 'message': 'Welcome to my website!'}
return render_template(template, **context)
In this example, we define a template with two variables, title and message. We then create a dictionary with the values of these variables and pass it to the render_template() function along with the template. The function returns the fully rendered HTML code, which is sent to the browser.
Pallister is a lightweight and easy-to-use library for building web applications in Python. With its intuitive API, routing system, and template rendering, it provides all the tools you need to create powerful web applications. Give it a try and see for yourself!