Python 3.13.0 Beta 1 was released Wednesday 8 May by the Python Foundation (see link to announcement below). I downloaded the sources and built it. Here’s what I did to set up for this beta release.
Install Build Prerequisites
You need to install the following packages in order to build every module in Python. There is one additional package dependency that Python 3.13 will need to build, and it’s libmpdec-dev. Every other Python version prior to 3.13 did not need this package installed.
Make a build directory at the same level as the untarred source directory.
From within the build directory execute the configure script. In this example we’re building Python 3.13.0b1. ../Python-3.13.0b1/configure --enable-optimizations
Within the build directory run make.
Install into the alternate location for this version of Python: sudo -H make altinstall
Check for the alternate location with which python3.13 . It should return /usr/local/bin/python3.13 .
Create A Virtual Work Environment
In your home directory create a work folder. On my system I named it ‘VPython’, but you can call it whatever you want.
Change directory into it, then create a Python virtual environment using, as an example, python3.13 -m venv 313.
There is a bin directory in the virtual directory you created, which in this example was 313. Start the environment with source 313/bin/activate .
I created an alias so that typing 313 in any shell starts the environment. The alias should source the full path and the script in the virtual environment’s bin directory. When active, typing deactivate drops you back to a regular shell environment. See the following screen capture.
Python 3.13.0 beta 1 screen capture
Note that there are new, and significant, changes coming to Python via version 3.13. The screen capture hints at just several of the new features, colorization and much better error reporting in the REPL. Note also that you no longer have to type exit() as a function to exit the REPL. It appears that Python is adding massive quality-of-life upgrades, starting with 3.13.
Raspberry Pi Pico webserver via iPhone’s Safari web browser
Monday 18 March, Adafruit released version 9 of CircuitPython. I had been working with version 9 pre-releases up to release candidate 1, but due to some problems with RC1 I dropped back to 8.2.10. I might try version 9 on another different board I have, but for now I’m sticking with 8.2.10 until such time as I actually have to migrate to version 9 in the future.
The code I’m presenting came from an Adafruit project over a year ago, and I can’t recall where it was, but it was complicated with additional device control. I’ve taken the code and tidied it up a bit, especially the embedded HTML that’s used to render the webpage on a smartphone’s web browser. I’ve tested it on both Android as well as iOS, and it works fine regardless.
Note that I’ve also used the new CircuitPython’s feature of settings.toml to define not just the local SSID and password, but the static IP address of the CircuitPython webserver as well as if it’s running in debug mode or not. It’s a lot easier to change a small toml file than to go and try to change something in the code body.
Once up and running all you need to do is either turn on the on-board LED or turn it off. If you have a serial application attached to the USB port, then you’ll see debug information streaming out the port. This is because DEBUG on line 26 has been set to True in the settings.toml file.
And one more thing: in debug mode, you navigate to [STATIC_IP_ADDRESS]:5000 to see the page. When not in debug mode, then the webserver is on regular port 80.
import osimport timeimport ipaddressimport wifiimport socketpoolimport boardimport microcontrollerfrom digitalio import DigitalInOut, Directionfrom adafruit_httpserver import Server, Request, Response, POST# On-device LED setupled = DigitalInOut(board.LED)led.direction = Direction.OUTPUTled.value = Falseipv4 = ipaddress.IPv4Address(os.getenv('STATIC_IP'))netmask = ipaddress.IPv4Address("255.255.255.0")gateway = ipaddress.IPv4Address(os.getenv('GATEWAY'))wifi.radio.set_ipv4_address(ipv4=ipv4,netmask=netmask,gateway=gateway)wifi.radio.connect(os.getenv('AP_SSID'), os.getenv('AP_PASSWORD'))print(" Connected to WiFi access point...")pool = socketpool.SocketPool(wifi.radio)server = Server(pool, "/static", debug=os.getenv('DEBUG'))font_family = "sans-serif"# The HTML page body setup as an 'f' string.## Use {{ and }} if something within HTML *actually* needs to be in brackets# such as CSS style formatting.#def webpage():html = f"""<!DOCTYPE html><html><head><meta http-equiv="Content-type" content="text/html;charset=utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><style>html{{font-family: {font_family};background-color: #FFFFFF;display:inline-block;margin: 0px auto;text-align: center;}}h1{{color:#D35F8D;word-wrap: break-word;font-size: 35px;}}p{{font-size: 1.5rem;word-wrap: break-word;}}.button-red{{font-family: {font_family};display: inline-block;width: 99%;background-color: #DC143C;border: none;border-radius: 4px;color: white;padding: 16px 40px;text-decoration: none;font-size: 30px;margin: 2px;cursor: pointer;}}.button-green{{font-family: {font_family};display: inline-block;width: 99%;background-color: #228B22;border: none;border-radius: 4px;color: white;padding: 16px 40px;text-decoration: none;font-size: 30px;margin: 2px;cursor: pointer;}}p.dotted {{margin: auto;width: 90%;font-size:25px;text-align: center;}}</style></head><body><title>Pico W LED Control</title><h1>Pico W LED Control</h1><form accept-charset="utf-8" method="POST"><button class="button-green" name="LED ON" value="ON" type="submit">LED ON</button></a><button class="button-red" name="LED OFF" value="OFF" type="submit">LED OFF</button></a></form></body></html>"""return html# route default static IP@server.route("/")def base(request: Request): # pylint: disable=unused-argumentreturn Response(request, f"{webpage()}", content_type='text/html')# Determine which button was pressed and execute associated action.#@server.route("/", POST)def buttonpress(request: Request):raw_text = request.raw_request.decode("utf8")print(raw_text)## If the led on button was pressed...if "ON" in raw_text:led.value = True## If the led off button was pressed...if "OFF" in raw_text:led.value = Falsereturn Response(request, f"{webpage()}", content_type='text/html')print(" Starting HTTP server...")try:server.start(str(wifi.radio.ipv4_address))print(f" Listening on http://{wifi.radio.ipv4_address}")## If the server fails to start then kick-start the Pico W.#except OSError:time.sleep(5)print(" !!! OSERROR RESTARTING !!!")microcontroller.reset()print(" Start polling...")is_healthy = True;## DO NOT hard code as True, instead provide an exit if something goes wrong.#while is_healthy:try:# Poll for incoming requests.server.poll()# pylint: disable=broad-exceptexcept Exception as e:print(e)is_healthy = Falsecontinue
Radarwitch
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