Python PyQt5 - Change label text dynamically based on user Input

[ppel123]

Hi,
I am trying to create an app with 2 python files, the first reads the user input (either from python shell or directly from the keyboard via modules like pynput-keyboard) and stores it in a variable (after enter pressed).

The second creates the gui that has 2 labels and two buttons and takes the variable passed from the first file and changes the labels based on this variable (the buttons are used for data insert in a later step in a database).

I have created the gui and the python script that reads the input, but I am struggling on passing this variable to the second script and on changing the label dynamically.
Please see the code samples above.

read_user_input.py

from gui import Ui
from PyQt5 import QtWidgets, uic
import sys

app = QtWidgets.QApplication(sys.argv) # Create an instance of QtWidgets.QApplication
window = Ui() # Create an instance of our class
# app.exec_() # Start the application

x = input("Give a number")
if (int(x) == 2):
    window.label.setText(str(x+2))
else:
    window.label_2.setText("changed "+str(x-2))

gui.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>Hook</class>
 <widget class="QMainWindow" name="Hook">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>237</width>
    <height>120</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>Hook</string>
  </property>
  <property name="windowIcon">
   <iconset>
    <normaloff>10-03-2020 thesis_01/keyboard.ico</normaloff>10-03-2020 thesis_01/keyboard.ico</iconset>
  </property>
  <widget class="QWidget" name="centralwidget">
   <widget class="QLabel" name="label">
    <property name="geometry">
     <rect>
      <x>10</x>
      <y>0</y>
      <width>131</width>
      <height>31</height>
     </rect>
    </property>
    <property name="text">
     <string>Label1</string>
    </property>
   </widget>
   <widget class="QLabel" name="label_2">
    <property name="geometry">
     <rect>
      <x>10</x>
      <y>40</y>
      <width>131</width>
      <height>31</height>
     </rect>
    </property>
    <property name="mouseTracking">
     <bool>false</bool>
    </property>
    <property name="text">
     <string>Label2</string>
    </property>
   </widget>
   <widget class="QPushButton" name="pushButton">
    <property name="geometry">
     <rect>
      <x>160</x>
      <y>0</y>
      <width>61</width>
      <height>31</height>
     </rect>
    </property>
    <property name="text">
     <string>B1</string>
    </property>
   </widget>
   <widget class="QPushButton" name="pushButton_2">
    <property name="geometry">
     <rect>
      <x>160</x>
      <y>42</y>
      <width>61</width>
      <height>31</height>
     </rect>
    </property>
    <property name="text">
     <string>B2</string>
    </property>
   </widget>
  </widget>
  <widget class="QMenuBar" name="menubar">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>237</width>
     <height>21</height>
    </rect>
   </property>
   <widget class="QMenu" name="menuHook">
    <property name="title">
     <string>Hook</string>
    </property>
   </widget>
   <widget class="QMenu" name="menuHelp">
    <property name="title">
     <string>Help</string>
    </property>
   </widget>
   <addaction name="menuHook"/>
   <addaction name="menuHelp"/>
  </widget>
  <widget class="QStatusBar" name="statusbar"/>
 </widget>
 <resources/>
 <connections/>
</ui>

gui.py

from PyQt5 import QtWidgets, uic
import sys
import time

class Ui(QtWidgets.QMainWindow):
    def __init__(self):
        super(Ui, self).__init__() # Call the inherited classes __init__ method
        uic.loadUi('untitled.ui', self) # Load the .ui file
        self.show() # Show the GUI

The ui window is tshown in the attached file.

I searched it and didn't find a solution. Any help is appreciated.
Thanks in advance.