Erstellen Sie auf diese Weise ein Kombinationsfeld mit PyQt, in dem Sie den an Ihren PC angeschlossenen COM-Anschluss auswählen können. Informationen zum Erstellen einer GUI-App mit PyQt und Qt Designer finden Sie unter hier.
$ pip install pyqt5
$ pip install pyserial
Starten Sie Qt Designer und erstellen Sie ein schönes Widget mit Combo Box.
Der Name der Combo Box lautet "Port Combo Box".
port_combo_box_sample.ui
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>Form</class>
<widget class="QWidget" name="Form">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>219</width>
<height>70</height>
</rect>
</property>
<property name="windowTitle">
<string>Form</string>
</property>
<widget class="QComboBox" name="portComboBox">
<property name="geometry">
<rect>
<x>30</x>
<y>20</y>
<width>171</width>
<height>22</height>
</rect>
</property>
</widget>
</widget>
<resources/>
<connections/>
</ui>
$ pyuic5 port_combo_box_sample.ui > port_combo_box_sample_ui.py
port_combo_box_sample_ui.py
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'port_combo_box_sample.ui'
#
# Created by: PyQt5 UI code generator 5.15.1
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again. Do not edit this file unless you know what you are doing.
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Form(object):
def setupUi(self, Form):
Form.setObjectName("Form")
Form.resize(219, 70)
self.portComboBox = QtWidgets.QComboBox(Form)
self.portComboBox.setGeometry(QtCore.QRect(30, 20, 171, 22))
self.portComboBox.setObjectName("portComboBox")
self.retranslateUi(Form)
QtCore.QMetaObject.connectSlotsByName(Form)
def retranslateUi(self, Form):
_translate = QtCore.QCoreApplication.translate
Form.setWindowTitle(_translate("Form", "Form"))
port_combo_box_sample_gui.py
import sys
from PyQt5.QtWidgets import QMainWindow, QApplication
from serial.tools import list_ports
from port_combo_box_sample_ui import Ui_Form
class PortComboBoxSampleGui(QMainWindow, Ui_Form):
def __init__(self, parent=None):
super(PortComboBoxSampleGui, self).__init__(parent)
self.setupUi(self)
self._init_port_combo_box()
def _init_port_combo_box(self):
comports = list_ports.comports()
if not comports:
print("Port nicht gefunden")
return
for index, comport in enumerate(comports):
self.portComboBox.addItem(comport.device)
if __name__ == "__main__":
argvs = sys.argv
app = QApplication(argvs)
main_gui = PortComboBoxSampleGui()
main_gui.show()
sys.exit(app.exec_())