Python and Flask introduction for my classmates Презентация и введение в flask
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The document provides an overview of creating a simple web application using Python Flask, emphasizing Python's high-level features such as dynamic typing and readability. It includes example code for a basic Flask application that connects to a local server and responds with text. The document also credits relevant websites and contact information for further inquiries.
Python and Flask introduction for my classmates Презентация и введение в flask
- 1. Simple web-app with python Flask + Python Nikita Penzin(Lozhnikov)
- 2. … is a widely used general-purpose, high-level programming language - http://python.org Python
- 3. The creator Guido Van Rossum (1956 - …) Employment: Google, Dropbox “There is one way to do it right ...if you aren’t Dutchman”
- 4. The Zen of Python Beautiful is better than ugly Explicit is better than implicit Simple is better than complex Complex is better than complicated Readability counts
- 5. Features ● dynamic type system ● automatic memory management ● large and comprehensive standard library ● lots of implementations ● beautiful, understandable, powerful syntax ● easy to learn ● TOP employers use it : Google, Yandex ...
- 6. Examples print 'Hello, world!' >>> Hello, world! def fib(n): if n < 2: return n return fib(n-2)+fib(n-1) print fib(7) >>> 13 a = 3 b = ‘hello’ print b * 3 >>> hellohellohello
- 7. Flask Flask is a microframework for Python web-apps. http://flask.pocoo.org/ created by Armin Ronacher
- 8. Flask based ‘Hello, world!’ app 1. Connect to a ‘flask’ wifi-hotspot from your devices 2. Open your browser 3. Get to 192.168.xxx.xxx/ 4. Have fun: get to 192.168.xxx.xxx/any text e.g. 192.168.xxx.xxx/<h1>Hello, class<h1>
- 9. Explanation flask.py --------------------------------- from flask import Flask < import required modules app = Flask(__name__) < create instance app of a class Flask @app.route("/") < decorate method hello with app.route def hello(): return "Hello World!" @app.route("/<text>") def hello_user(text): return text app.run(host=’0.0.0.0’) < call the run method on app