PyQt6 表单布局Form Layout (QFormLayout)
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FormLayout控件表示表单布局，它的基类是QFormLayout，该控件以表单方式进行布局。
表单是一种网页中常见的与用户交互的方式，其主要由两列组成，第一列用来显示信息，给用户提示，而第二列需要用户进行输入或者选择
QFormLayout常用方法：
| 方法 | 说明 |
|---|---|
| addRow() | 添加行 |
| insertRow() | 插入行 |
| removeRow() | 删除行 |
| getWidgetPosition() | 获取控件位置 |
| getLayoutPosition() | 获取容器管理器位置 |
| rowCount() | 获取行的总个数 |
| setLayout() | 设置布局管理器的位置 |
| setWidget() | 修改控件位置 |
| takeRow() | 移除行但并不删除子控件 |
| labelForField() | 标签操作 |
| setRowWrapPolicy() | 设置行的包装策略 |
| rowWrapPolicy() | 获取行的包装策略 |
| setFormAlignment() | 对其方式，对整个表单进行设置 |
| setLabelAlignment() | 对其方式，对标签(左侧区域)进行设置 |
| formAlignment() | 对其方式，获取整个表单的对齐方式 |
| labelAlignment() | 对其方式，获取标签布局标签(左侧)侧的对齐方式 |
| setFieldGrowthPolicy() | 设置字段增长策略 |
| fieldGrowthPolicy() | 获取字段增长策略 |
UI生成参考代码：
from PyQt6 import QtCore, QtGui, QtWidgetsclass Ui_Form(object):def setupUi(self, Form):Form.setObjectName("Form")Form.resize(649, 520)self.formLayoutWidget = QtWidgets.QWidget(parent=Form)self.formLayoutWidget.setGeometry(QtCore.QRect(110, 60, 471, 371))self.formLayoutWidget.setObjectName("formLayoutWidget")self.formLayout = QtWidgets.QFormLayout(self.formLayoutWidget)self.formLayout.setLabelAlignment(QtCore.Qt.AlignmentFlag.AlignRight|QtCore.Qt.AlignmentFlag.AlignTrailing|QtCore.Qt.AlignmentFlag.AlignVCenter)self.formLayout.setFormAlignment(QtCore.Qt.AlignmentFlag.AlignLeading|QtCore.Qt.AlignmentFlag.AlignLeft|QtCore.Qt.AlignmentFlag.AlignTop)self.formLayout.setContentsMargins(20, 50, 20, 0)self.formLayout.setHorizontalSpacing(20)self.formLayout.setVerticalSpacing(30)self.formLayout.setObjectName("formLayout")self.label = QtWidgets.QLabel(parent=self.formLayoutWidget)self.label.setAlignment(QtCore.Qt.AlignmentFlag.AlignCenter)self.label.setObjectName("label")self.formLayout.setWidget(0, QtWidgets.QFormLayout.ItemRole.SpanningRole, self.label)self.label_2 = QtWidgets.QLabel(parent=self.formLayoutWidget)self.label_2.setObjectName("label_2")self.formLayout.setWidget(1, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_2)self.lineEdit = QtWidgets.QLineEdit(parent=self.formLayoutWidget)self.lineEdit.setObjectName("lineEdit")self.formLayout.setWidget(1, QtWidgets.QFormLayout.ItemRole.FieldRole, self.lineEdit)self.label_3 = QtWidgets.QLabel(parent=self.formLayoutWidget)self.label_3.setObjectName("label_3")self.formLayout.setWidget(2, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_3)self.lineEdit_2 = QtWidgets.QLineEdit(parent=self.formLayoutWidget)self.lineEdit_2.setObjectName("lineEdit_2")self.formLayout.setWidget(2, QtWidgets.QFormLayout.ItemRole.FieldRole, self.lineEdit_2)self.label_4 = QtWidgets.QLabel(parent=self.formLayoutWidget)self.label_4.setObjectName("label_4")self.formLayout.setWidget(3, QtWidgets.QFormLayout.ItemRole.LabelRole, self.label_4)self.lineEdit_3 = QtWidgets.QLineEdit(parent=self.formLayoutWidget)self.lineEdit_3.setObjectName("lineEdit_3")self.formLayout.setWidget(3, QtWidgets.QFormLayout.ItemRole.FieldRole, self.lineEdit_3)self.pushButton = QtWidgets.QPushButton(parent=self.formLayoutWidget)self.pushButton.setObjectName("pushButton")self.formLayout.setWidget(4, QtWidgets.QFormLayout.ItemRole.FieldRole, self.pushButton)self.retranslateUi(Form)QtCore.QMetaObject.connectSlotsByName(Form)def retranslateUi(self, Form):_translate = QtCore.QCoreApplication.translateForm.setWindowTitle(_translate("Form", "Form"))self.label.setText(_translate("Form", "用户注册"))self.label_2.setText(_translate("Form", "用户名："))self.label_3.setText(_translate("Form", "密码："))self.label_4.setText(_translate("Form", "确认密码："))self.pushButton.setText(_translate("Form", "注册"))