import sys
from main_form import *
from work import *
from PyQt5 import QtCore, QtGui, QtWidgets

class MyWin(QtWidgets.QMainWindow):
    def __init__(self, parent=None):
        QtWidgets.QWidget.__init__(self, parent)
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)
        self.ui.lineEdit.setPlaceholderText("Пример: 2018")
        self.ui.lineEdit_2.setPlaceholderText("Пример: 07")

        self.ui.pushButton.clicked.connect(self.Check)
        self.show()

    def Check(self):
        year = self.ui.lineEdit.text()
        month = self.ui.lineEdit_2.text()
        extract(self, dir, year, month)
    

if __name__=="__main__":
    app = QtWidgets.QApplication(sys.argv)
    myapp = MyWin()
    myapp.show()
    sys.exit(app.exec_())

import zipfile
import timeit
import os

def extract(self, dir, year, month):
    if os.listdir(dir):
        for file in os.listdir(dir):
            if os.path.isfile(dir+file):
                time_start = timeit.default_timer()
                with zipfile.ZipFile(dir + file, 'r') as zfile:
                    zfile.extractall(path='C:\\txt\\1\\')
                    zfile.close()

                tm_wr = str(timeit.default_timer() - time_start)               

                self.ui.textEdit.setText(tmp_zip + '  время обработки: ' + tm_wr[0: 5]) 
# в этом месте хочу отправить в виджет строки о разной информации обработки файла.