What does the @ symbol mean ?

[peter247]

I new to the world of python programming and trying to set up a web server and going to use the picweb library for this task.
How I learn is take the program apart line by line and understand what each line does , change things and see what happens.
In this bit of code :-

Code: Select all

 @app.route("/temp")
def html(req, resp):
    hw_sensor.measure()
    t = hw_sensor.temperature()

I'm trying to work out what this part of the code does @app.route("/temp") or what the @ does.

Thank in advanced Peter A

[dhylands]

These are called decorators and part of regular python.
https://realpython.com/primer-on-python ... decorators

In your particular example. it causes the html function to be called when /temp is requested (the exact details will depend on the particular framework you're using).

[peter247]

These are called decorators and part of regular python.
https://realpython.com/primer-on-python ... decorators

In your particular example. it causes the html function to be called when /temp is requested (the exact details will depend on the particular framework you're using).

Thank you , That explains it all , now all I need to do is understand it.