Adding items (strings) from a list to a QListWidget

Question

First of all, my UI is this:

Well! I make a "Code generator". I have a blank QListWidget, which I want to have codes. These codes will making with 'Create' button. Until now, I was testing the script, seeing the codes to be printed on the terminal. Now, I want to see them in the QListWidget. So, when I click the button, a new code will appear to the QListWidget. First, codes go to Codes_list = [] with this way:

class Ui_MainWindow_2_1(object):
    def __init__(self):
        self.Codes_list = []

    def Code_maker(self):
        import random
        chars= "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!$%&*#/\?[]{}-_"
        for x in range(self.HowMany_SpinBox.value()):
            password = ""
            for y in range(0, 10):
                password_char = random.choice(chars)
                password += password_char
            print(password)
            self.Codes_list.append(password)

    def setupUi(self, MainWindow_2_1):
    # Some code later...
    self.CreateButton.clicked.connect(self.Code_maker)

For example, the Codes_list could have these codes: ["rdt5u\&/EQ", "BJnV?zNOXn", "TnRZEMjbd6", "}?TF/hmTDF", "y9D1-Cl-Hk"]. Now, from here, codes should transfer to the QListWidget... How?

My QListWidget script is this:

class Ui_MainWindow_2_1(object):
    # Some code later...

    def setupUi(self, MainWindow_2_1):
        # Some code later...
        self.Codes_listWidget = QtWidgets.QListWidget(self.background)
        self.Codes_listWidget.setGeometry(QtCore.QRect(20, 120, 231, 161))
        self.Codes_listWidget.setStyleSheet("background-color: none;\nborder-radius: 10px;")
        self.Codes_listWidget.setObjectName("Codes_listWidget")
        item = QtWidgets.QListWidgetItem()
        font = QtGui.QFont()
        font.setFamily("Microsoft YaHei UI")
        font.setWeight(50)
        item.setFont(font)
        self.Codes_listWidget.addItems(self.Codes_list)

I want QListWidget to update exactly when you click the 'Create' button.

The passwords on Code_maker will stay there forever.

Answer 1

My question solved in the comments of my question! I added self.Codes_listWidget.addItem(password) after self.Codes_list.append(password). Thanks @musicamante!!!

The finally script is:

class Ui_MainWindow_2_1(object):
    def __init__(self):
        self.Codes_list = []

    def Code_maker(self):
        import random
        chars= "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!$%&*#/\?[]{}-_"
        for x in range(self.HowMany_SpinBox.value()):
            password = ""
            for y in range(0, 10):
                password_char = random.choice(chars)
                password += password_char
            print(password)
            self.Codes_list.append(password)
            self.Codes_listWidget.addItem(password)

    def setupUi(self, MainWindow_2_1):
    # Some code later...
    self.CreateButton.clicked.connect(self.Code_maker)

My finally QListWidget script is:

class Ui_MainWindow_2_1(object):
    # Some code later...

    def setupUi(self, MainWindow_2_1):
        # Some code later...
        self.Codes_listWidget = QtWidgets.QListWidget(self.background)
        self.Codes_listWidget.setGeometry(QtCore.QRect(20, 120, 231, 161))
        self.Codes_listWidget.setStyleSheet("background-color: none;\nborder-radius: 10px;")
        self.Codes_listWidget.setObjectName("Codes_listWidget")
        item = QtWidgets.QListWidgetItem()
        font = QtGui.QFont()
        font.setFamily("Microsoft YaHei UI")
        font.setWeight(50)
        item.setFont(font)