showtemp.py

#!/usr/bin/env python3

import os, re
import curses
from widgets import rectangle, Label
from datetime import datetime
from curses import wrapper


class tempwin:
    def __init__(self, xpos, ypos, width, height, sensor):
        self.win = curses.newwin(height, width, ypos, xpos)
        self.height = height
        self.width = width
        self.xpos = xpos
        self.ypos = ypos
        self.sensor = sensor

        self.win.addstr(0, 0, "Temperature:")
        self.label = Label(self.win, 1, 2, self.width - 2, "-", padding_left=1).draw()
        rectangle(self.win, 0, 1, self.width, self.height - 1)

    def show(self):
        sf = open("/sys/bus/w1/devices/" + self.sensor + "/w1_slave")
        if re.match(r"([0-9a-f]{2} ){9}: crc=[0-9a-f]{2} YES", sf.readline()):
            temp = (
                float(
                    re.match(r"([0-9a-f]{2} ){9}t=([+-]?[0-9]+)", sf.readline()).group(
                        2
                    )
                )
                / 1000
            )
            self.label.update_text(str(temp) + " °C").draw()
        else:
            self.label.update_text("-").draw()
        self.win.refresh()