PyQt5

from PyQt5.QtWidgets import QWidget, QApplication, QTextEdit
from PyQt5 import uic, QtCore, QtGui, QtWidgets
import sys, time, datetime, pymysql
from threading import *
import sched, time

from threading import Timer

class RepeatedTimer(object):
    def __init__(self, interval, function, *args, **kwargs):
        self._timer     = None
        self.interval   = interval
        self.function   = function
        self.args       = args
        self.kwargs     = kwargs
        self.is_running = False
        self.start()

    def _run(self):
        self.is_running = False
        self.start()
        self.function(*self.args)

    def start(self):
        if not self.is_running:
            self._timer = Timer(self.interval, self._run)
            self._timer.start()
            self.is_running = True

    def stop(self):
        self._timer.cancel()
        self.is_running = False

class Ui_Form(object):

    # s = sched.scheduler(time.time, time.sleep)

    def do_something(self, sc):
        sc.append("test")
        # do your stuff
        # s.enter(60, 1, do_something, (sc,))

    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(431, 519)
        self.grad = QtWidgets.QLabel(Form)
        self.grad.setGeometry(QtCore.QRect(0, 0, 431, 521))
        self.grad.setStyleSheet("background-color: rgb(0, 68, 206);")
        self.grad.setText("")
        self.grad.setObjectName("grad")
        self.sendandrec = QtWidgets.QTextEdit(Form)
        self.sendandrec.setGeometry(QtCore.QRect(20, 200, 351, 281))
        font = QtGui.QFont()
        font.setFamily("Century Gothic")
        font.setPointSize(10)
        self.sendandrec.setFont(font)
        self.sendandrec.setObjectName("sendandrec")
        self.label_2 = QtWidgets.QLabel(Form)
        self.label_2.setGeometry(QtCore.QRect(240, 80, 81, 31))
        self.label_2.setStyleSheet("font: 75 14pt \"Tahoma\";\n"
"color: rgb(255, 255, 255);")
        self.label_2.setObjectName("label_2")
        self.pushButton = QtWidgets.QPushButton(Form)
        self.pushButton.setGeometry(QtCore.QRect(280, 140, 91, 51))
        font = QtGui.QFont()
        font.setFamily("Arial")
        font.setPointSize(14)
        font.setBold(False)
        font.setItalic(False)
        font.setWeight(50)
        self.pushButton.setFont(font)
        self.pushButton.setStyleSheet("color: rgb(255, 255, 255);\n"
"background-color: rgba(47, 47, 47,200);\n"
"border: none;\n"
"border-radius:25px;\n"
"font: 14pt \"Arial\";")
        self.pushButton.setObjectName("pushButton")
        self.pushButton.clicked.connect(self.btnPushButtonOnClick)

        self.label = QtWidgets.QLabel(Form)
        self.label.setGeometry(QtCore.QRect(10, 20, 371, 61))
        font = QtGui.QFont()
        font.setFamily("Century Gothic")
        font.setPointSize(28)
        self.label.setFont(font)
        self.label.setStyleSheet("color: rgb(255, 255, 255);")
        self.label.setObjectName("label")

        self.sendtext = QtWidgets.QLineEdit(Form)
        self.sendtext.setGeometry(QtCore.QRect(20, 140, 251, 51))
        font = QtGui.QFont()
        font.setFamily("Century Gothic")
        font.setPointSize(10)
        self.sendtext.setFont(font)
        self.sendtext.setStyleSheet("")
        self.sendtext.setObjectName("sendtext")
        # t1 = Thread(target=self.printing, args=())
        # t1.start()

        self.retranslateUi(Form)
        QtCore.QMetaObject.connectSlotsByName(Form)

        self.rt = RepeatedTimer(1, self.do_something, self.sendandrec)

    def btnPushButtonOnClick(self):
        self.sendandrec.setText("Ditekan")

    def printing(self):
        self.sendandrec.setText(self.sendandrec.toPlainText() +"\naaa")


    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))
        self.label_2.setText(_translate("Form", "Tamu"))
        self.pushButton.setText(_translate("Form", "Send"))
        self.label.setText(_translate("Form", "konsultasi hukum"))


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    Form = QtWidgets.QWidget()
    ui = Ui_Form()
    ui.setupUi(Form)
    Form.show()
    # ui.rt.stop()
    sys.exit(app.exec_())