Can't run PyQt application on 14.2

I compiled and installed PyQt from here: https://mirrors.slackware.com/slackw.../source/l/PyQt.

But when I try to run a simple application:

Code:import sys
from PyQt4 import QtCore, QtGui

from test_ui import Ui_Form

class MyForm(QtGui.QMainWindow):
def __init__(self, parent=None):
QtGui.QWidget.__init__(self, parent)
self.ui = Ui_Form()
self.ui.setupUi(self)

if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
myapp = MyForm()
myapp.show()
sys.exit(app.exec_())Code:$ python3 ./test1.pyIt gives an error: ModuleNotFoundError: No module named 'PyQt4'

Maybe, I need to change some configs?