from PyQt5.QtWidgets import *
import sys

app = QApplication(sys.argv)

w = QDialog()

lay = QGridLayout()

lbl = QLabel("Username:")
lay.addWidget(lbl,0,0)

lbl = QLabel("Password:")
lay.addWidget(lbl,1,0)

txtUsername = QLineEdit()
lay.addWidget(txtUsername,0,1,1,2)

txtPassword = QLineEdit()
txtPassword.setEchoMode(QLineEdit.Password)
lay.addWidget(txtPassword,1,1,1,2)

def cmdOK(checked):
    w.done(100)

def cmdCancel(checked):
    w.done(100)

btn = QPushButton("OK")
btn.clicked.connect(cmdOK)
lay.addWidget(btn,2,1)

btn = QPushButton("Cancel")
btn.clicked.connect(cmdOK)
lay.addWidget(btn,2,2)


w.setLayout(lay)
r = w.exec()
print(f"Po show z {r}")

if r == 100:
    print(f"Tworze uzytkownia {txtUsername.text()} z haslem {txtPassword.text()}")
else:
    print(f"Anulowano operacje tworzenia uzytkownika")

app.quit()