Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python\lib\tkinter\__init__.py", line 1705, in __call__
    return self.func(*args)
  File "D:\Рабочий стол\time.py", line 48, in on_click
    text = format_data(data)
  File "D:\Рабочий стол\time.py", line 41, in format_data
    out += f'{k} = {datetime.fromtimestamp(v).strftime("%H:%M:%S")}\n'
TypeError: an integer is required (got type str)

 datetime.fromtimestamp(int(v)).strftime("%H:%M:%S")

  
from pysnmp.entity.rfc3413.oneliner import cmdgen
from datetime import datetime
import tkinter as tk
def on_clickReturn(e):
    on_click()
def get_data_from_sensor(ip):
    cmdGen = cmdgen.CommandGenerator()
    errorIndication, errorStatus, errorIndex, \
    varBindTable = cmdgen.CommandGenerator().bulkCmd(
        cmdgen.CommunityData('test-agent', 'public'),
        cmdgen.UdpTransportTarget((ip, 161)),
        0,
        25,
        ('1.3.6.1.4.1.41927.2.15.2.6'),  # Температура
        ('1.3.6.1.4.1.41927.2.15.2.7'),  # Вольтаж
        ('1.3.6.1.4.1.41927.2.15.2.1'),  # Входящий оптический сигнал
        ('1.3.6.1.4.1.41927.2.15.1.4'),  # Время работы
    )
    if errorIndication:
        return errorIndication
    else:
        if errorStatus:
            return'%s at %s' % (
                errorStatus.prettyPrint(),
                errorIndex and varBindTable[-1][int(errorIndex) - 1] or '?'
            )
        else:
            out = {}
            dictData = {'SNMPv2-SMI::enterprises.41927.2.15.2.6.0': 'Температура',
                        'SNMPv2-SMI::enterprises.41927.2.15.2.7.0': 'Вольтаж',
                        'SNMPv2-SMI::enterprises.41927.2.15.2.1.0': 'Входящий оптический сигнал',
                        'SNMPv2-SMI::enterprises.41927.2.15.1.4.0': 'Время работы' }
            for varBindTableRow in varBindTable:
                for name, val in varBindTableRow:
                    out.update({dictData[name.prettyPrint()]: val.prettyPrint()})
            return out
def format_data(data):
    out = ''
    for k, v in data.items():
        if k == 'Время работы':
            out += f'{k} = { datetime.fromtimestamp(int(v)).strftime("%H:%M:%S")}\n'
        else:
            out += f'{k} = {v}\n'
    return out
def on_click():
    ip = sv.get()
    data = get_data_from_sensor(ip)
    text = format_data(data)
    text_area.insert(1.0, text)
root = tk.Tk()
sv = tk.StringVar()
lbl = tk.Label(text='IP ОП FORO').pack()
entry = tk.Entry(textvariable=sv, width=60)
entry.pack()
btn = tk.Button(text='получить данные', command=on_click)
btn.pack()
text_area = tk.Text(width=60, height=5)
text_area.pack()
root.bind ('<Return>', on_clickReturn)
root.mainloop()

help(datetime.datetime.fromtimestamp)

fromtimestamp(...) method of builtins.type instance
    timestamp[, tz] -> tz's local time from POSIX timestamp.