如何在存储在一个大列表中的所有列表中搜索匹配项

from PyQt5 import QtWidgets, QtCore from PyQt5.QtWidgets import QPushButton, QLineEdit, QHBoxLayout, QLabel, QFrame, QVBoxLayout, QGridLayout, QWidget Names = ['Bob','Randy','Dakota','Steven','Clarke','Niomi','David','Nathan','James','Joe','Jacob','Jonah','Jerome','Jack','Jeremy','Jackson','Jamie'] Ages = ['51','32','22','19','40','27','19','45','1','2','3','4','5','6','7','8','9'] class MyWindow(QtWidgets.QMainWindow): # Window setup def __init__(self): # Window setup super(MyWindow, self).__init__() # Window setup centralWidget = QWidget() # Window setup self.setCentralWidget(centralWidget) # Window setup self.setWindowTitle("ASSET") # Window setup self.OpenButton = QPushButton('Open',self) # Creates the open button self.OpenButton.clicked.connect(self.Open) # Links the open button to the "open" function self.SaveButton = QPushButton('Save',self) # Creates the save button self.SearchBar = QLineEdit('Search',self) # Creates the SearchBar LineEdit self.SearchBar.textChanged.connect(self.Search) self.PreviousButton = QPushButton('Previous',self) # Creates the previous button self.PreviousButton.clicked.connect(lambda: self.PreviousPage(self.MainFrame2.layout())) # Links the previous button to the "PreviousPage" function self.NextButton = QPushButton('Next',self) # Creates the next button self.NextButton.clicked.connect(lambda: self.NextPage(self.MainFrame2.layout())) # Links the next button to the "NextPage" function self.Page_Number = QLineEdit('Page Number',self) # Creates the Page_Number LineEdit self.Page_Number.returnPressed.connect(lambda: self.Page_Selector(self.MainFrame2.layout())) self.MainFrame = QFrame(self) # Creates a frame self.MainFrame2 = QFrame(self) # Creates a frame self.MainFrame3 = QFrame(self) # Creates a frame self.MainHlayout = QHBoxLayout(self.MainFrame) # Adds a Horizontal Layout self.MainHlayout2 = QHBoxLayout(self.MainFrame2) # Adds a Horizontal Layout self.MainHlayout3 = QHBoxLayout(self.MainFrame3) # Adds a Horizontal Layout self.Glayout = QGridLayout(centralWidget) # Adds a grid layout to the main window self.Glayout.addWidget(self.MainFrame) # Adds a frame to the main window's layout (it will be the top frame since it was added first) self.Glayout.addWidget(self.MainFrame2) # Adds a frame to the main window's layout (this will be the middle frame) self.Glayout.addWidget(self.MainFrame3) # Adds a frame to the main window's layout (this will be the bottom frame) self.MainHlayout.addWidget(self.OpenButton) # Adds the open button to the top frame's layout self.MainHlayout.addWidget(self.SearchBar) # Adds the search bar to the top frame's layout self.MainHlayout.addWidget(self.SaveButton) # Adds the save button to the top frame's layout self.MainHlayout3.addWidget(self.PreviousButton) # Adds the previous button to the bottom frame's layout self.MainHlayout3.addWidget(self.Page_Number) # Adds the Page_Number LineEdit to the bottom frame's layout self.MainHlayout3.addWidget(self.NextButton) # Adds the next button to the bottom frame's layout self.SubFrame = QFrame(self) # Creates a new frame self.SubVlayout = QVBoxLayout(self.SubFrame) # Adds a vertical layout to the new frame self.MainHlayout2.addWidget(self.SubFrame) # Adds the new frame to the middle frame self.Has_Been_Pressed = False # Sets the Has_Been_Pressed variable to False (will explain later) def Open(self): # This function is called when the open button is clicked self.Has_Been_Pressed = True # This sets the Has_Been_Pressed variable to True self.Nnum = 0 # Sets the Nnum variable to 0 self.Namepages = [] # Creates an empty list BasicCounter1 = 0 # Sets the BasicCounter1 variable to 0 BasicCounter2 = 1 # Sets the BasicCounter2 variable to 1 while (8 * BasicCounter1) < len(Names): # Creates a while loop with the condition: while 8 * BasicCounter is less than the length of the list "Names" yN = Names[0 + (8 * BasicCounter1):8 * BasicCounter2] # The new variable "yN" equals the list 'Names" from: 0 + 8*BasicCounter to 8*BasicCounter2 self.Namepages.insert(0, yN) # Inserts "yN" to the blank list "NamePages" BasicCounter1 += 1 # Adds 1 to BasicCounter1 BasicCounter2 += 1 # Adds 1 to BasicCounter2 self.Namepages2 = list(reversed(self.Namepages)) # Reverses the list order of "NamePages" self.Namepage = self.Namepages2[self.Nnum] # Sets the specified numbered item (based on value of "Nnum") of list "NamePages" to "NamePage" self.Anum = 0 # Exact Same as the last While Loop, but using a different list "Ages" self.Agepages = [] BasicCounter3 = 0 BasicCounter4 = 1 while (8 * BasicCounter3) < len(Ages): yA = Ages[0 + (8 * BasicCounter3):8 * BasicCounter4] self.Agepages.insert(0, yA) BasicCounter3 += 1 BasicCounter4 += 1 self.Agepages2 = list(reversed(self.Agepages)) self.Agepage = self.Agepages2[self.Anum] self.i = 0 # Sets the variable "i" to 0 self.Widget_Counter = 0 # Sets the variable "Widget_Counter" to 0 while self.i < len(self.Namepage): # Creates a while loop with the condition: while the variable "i" is less than the list "Namepage" if self.Widget_Counter <= 3: # if statement that reads: if the variable "Widget_Counter" is less than or equal to 3 self.SubVlayout.addWidget(QLabel(self.Namepage[self.i], self)) # Adds a new label (that reads a specified item from "Namepage" depending on the value of "i") to the vertical layout in the subframe that was added to the middle frame self.SubVlayout.addWidget(QLineEdit(self.Agepage[self.i], self)) # Does the same as above, but instead creates a LineEdit and fills it with a specified value from "Agepage" self.i += 1 # Adds 1 to "i" self.Widget_Counter += 1 # Adds 1 to "Widget_Counter" elif self.Widget_Counter > 3: # The other condition/path reads: if the variable "Widget_Counter" is greater than 3 self.SubFrame = QFrame(self) # Creates a new frame. Since it shares the same name as the previous "SubFrame", the code will now refer to THIS one instead self.SubVlayout = QVBoxLayout(self.SubFrame) # Adds a vertical layout to the new frame self.MainHlayout2.addWidget(self.SubFrame) # Adds the new frame to the middle frame (which has a horizontal layout, therefore is to the right of the previous "SubFrame") self.Widget_Counter = 0 # Sets "Widget_Counter" to 0 # print(len(self.Namepages2)) # print(self.Nnum) # print(self.Namepages2[1]) def NextPage(self, layout): # This function is called when the next button is clicked if self.Has_Been_Pressed: # This if statement reads: if "Has_Been_Pressed" is True (basically everything under the if statement will only run if the open button is pressed, bc that means "Has_Been_Pressed" = True) if self.Nnum < len(self.Namepages2) -1: # If statement that reads: If Nnum is less than the length of Namepages2 minus 1. This stops the loop from running when you reach the end of the list "Namepages" self.Nnum += 1 # Adds 1 to "Nnum" self.Anum += 1 # Adds 1 to "Anum" if layout is not None: # This if statement clears all widgets in the horizontal layout in "MainFrame2" (aka the middle frame) while layout.count(): item = layout.takeAt(0) widget = item.widget() if widget is not None: widget.deleteLater() else: self.clearLayout(item.layout()) self.SubFrame = QFrame(self) # Creates another new frame called "SubFrame" self.SubVlayout = QVBoxLayout(self.SubFrame) # Adds a vertical layout to the new frame self.MainHlayout2.addWidget(self.SubFrame) # Adds the new frame into the recently cleared horizontal layout in "MainFrame2" (aka the middle frame) self.Namepage = self.Namepages2[self.Nnum] # Changes Namepage to the next list in Namepages2 (this happens bc Nnum increases by one when the button is clicked) self.Agepage = self.Agepages2[self.Anum] # Same idea self.i = 0 # sets "i" back to zero self.Widget_Counter = 0 # sets 'Widget_Counter" back to zero while self.i < len(self.Namepage): # Same loop as before, but Namepage is different so it will display new data if self.Widget_Counter <= 3: self.SubVlayout.addWidget(QLabel(self.Namepage[self.i], self)) self.SubVlayout.addWidget(QLineEdit(self.Agepage[self.i], self)) self.i += 1 self.Widget_Counter += 1 elif self.Widget_Counter > 3: self.SubFrame = QFrame(self) self.SubVlayout = QVBoxLayout(self.SubFrame) self.MainHlayout2.addWidget(self.SubFrame) self.Widget_Counter = 0 self.Page_Number.setText(str(self.Nnum + 1)) else: pass else: pass def PreviousPage(self, layout): # Same as "Next Button" but you're subtracting one from Nnum and Anum. The new Nnum limit is now zero. if self.Has_Been_Pressed: if self.Nnum >= 1: self.Nnum -= 1 self.Anum -= 1 if layout is not None: while layout.count(): item = layout.takeAt(0) widget = item.widget() if widget is not None: widget.deleteLater() else: self.clearLayout(item.layout()) self.SubFrame = QFrame(self) self.SubVlayout = QVBoxLayout(self.SubFrame) self.MainHlayout2.addWidget(self.SubFrame) self.Namepage = self.Namepages2[self.Nnum] self.Agepage = self.Agepages2[self.Anum] self.i = 0 self.Widget_Counter = 0 while self.i < len(self.Namepage): if self.Widget_Counter <= 3: self.SubVlayout.addWidget(QLabel(self.Namepage[self.i], self)) self.SubVlayout.addWidget(QLineEdit(self.Agepage[self.i], self)) self.i += 1 self.Widget_Counter += 1 elif self.Widget_Counter > 3: self.SubFrame = QFrame(self) self.SubVlayout = QVBoxLayout(self.SubFrame) self.MainHlayout2.addWidget(self.SubFrame) self.Widget_Counter = 0 self.Page_Number.setText(str(self.Nnum + 1)) elif self.Nnum < 0: self.Nnum += 1 else: pass def Page_Selector(self,layout): if self.Has_Been_Pressed: Inputted_Value = int(self.Page_Number.text()) Selected_Nnum_and_Anum = Inputted_Value - 1 if 0 <= Selected_Nnum_and_Anum < 3: if layout is not None: while layout.count(): item = layout.takeAt(0) widget = item.widget() if widget is not None: widget.deleteLater() else: self.clearLayout(item.layout()) self.SubFrame = QFrame(self) self.SubVlayout = QVBoxLayout(self.SubFrame) self.MainHlayout2.addWidget(self.SubFrame) Selected_Namepage = self.Namepages2[Selected_Nnum_and_Anum] Selected_Agepage = self.Agepages2[Selected_Nnum_and_Anum] self.i = 0 self.Widget_Counter = 0 while self.i < len(Selected_Namepage): if self.Widget_Counter <= 3: self.SubVlayout.addWidget(QLabel(Selected_Namepage[self.i], self)) self.SubVlayout.addWidget(QLineEdit(Selected_Agepage[self.i], self)) self.i += 1 self.Widget_Counter += 1 elif self.Widget_Counter > 3: self.SubFrame = QFrame(self) self.SubVlayout = QVBoxLayout(self.SubFrame) self.MainHlayout2.addWidget(self.SubFrame) self.Widget_Counter = 0 # self.Nnum = Selected_Nnum_and_Anum # This will not work! else: pass else: pass def Search(self, text): # I have no idea where to start here! pass if __name__ == "__main__": import sys app = QtWidgets.QApplication(sys.argv) window = MyWindow() window.show() sys.exit(app.exec_())

1条回答

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1楼 · 发布于 2024-06-10 09:01:15

OP代码太长、太乱、太混乱，无法作为解决方案的基础，所以请花时间创建自己的实现。你知道吗

在本例中，我将信息集中在模型中，通过QDataWidgetMapper将小部件关联起来，从而允许GUI和模型共享相同的更新信息。另一个变化是使用适当的小部件，例如，如果您的数据是数字，那么使用QSpinBox比使用QLineEdit更好。此外，如果页面上的项目数少于预期，则小部件将被隐藏。你知道吗

最后，使用模型的findItems（）实现搜索。你知道吗

以上所有内容将在以下部分中实现：

import math
from PyQt5 import QtCore, QtGui, QtWidgets


class PageWidget(QtWidgets.QWidget):
    openClicked = QtCore.pyqtSignal()
    saveClicked = QtCore.pyqtSignal()

    def __init__(self, items_per_page=8, parent=None):
        super(PageWidget, self).__init__(parent)

        self.items_model = QtGui.QStandardItemModel(0, 2, self)

        self._current_page = -1

        self.open_button = QtWidgets.QPushButton("&Open")
        self.save_button = QtWidgets.QPushButton("&Save")
        self.search_lineedit = QtWidgets.QLineEdit(placeholderText="Search")

        self.previous_button = QtWidgets.QPushButton("&Previous")
        self.next_button = QtWidgets.QPushButton("&Next")
        self.page_spinbox = QtWidgets.QSpinBox(maximum=0)

        self.open_button.clicked.connect(self.openClicked)
        self.save_button.clicked.connect(self.saveClicked)
        self.search_lineedit.textChanged.connect(self.search)
        self.page_spinbox.valueChanged.connect(self.set_current_page)

        self.previous_button.clicked.connect(self.previous_page)
        self.next_button.clicked.connect(self.next_page)

        completer = QtWidgets.QCompleter(self)
        completer.setCaseSensitivity(QtCore.Qt.CaseInsensitive)
        completer.setCompletionMode(QtWidgets.QCompleter.InlineCompletion)
        completer.setModel(self.items_model)
        self.search_lineedit.setCompleter(completer)

        top_widget = QtWidgets.QWidget()
        h_top_lay = QtWidgets.QHBoxLayout(top_widget)
        h_top_lay.setContentsMargins(0, 0, 0, 0)
        h_top_lay.addWidget(self.open_button)
        h_top_lay.addWidget(self.search_lineedit)
        h_top_lay.addWidget(self.save_button)

        bottom_widget = QtWidgets.QWidget()
        h_bottom_lay = QtWidgets.QHBoxLayout(bottom_widget)
        h_bottom_lay.setContentsMargins(0, 0, 0, 0)
        h_bottom_lay.addWidget(self.previous_button)
        h_bottom_lay.addWidget(QtWidgets.QLabel("Page Number:"), 0)
        h_bottom_lay.addWidget(self.page_spinbox, 1)
        h_bottom_lay.addWidget(self.next_button)

        self._mapper_widgets = []
        items_widget = QtWidgets.QWidget()
        items_grid_layout = QtWidgets.QGridLayout(items_widget)
        items_grid_layout.setContentsMargins(0, 0, 0, 0)

        for i in range(8):
            name_label = QtWidgets.QLabel()
            age_spinbox = QtWidgets.QSpinBox()

            widget = QtWidgets.QWidget()
            lay = QtWidgets.QVBoxLayout(widget)
            lay.setContentsMargins(0, 0, 0, 0)
            lay.addWidget(name_label)
            lay.addWidget(age_spinbox)

            items_grid_layout.addWidget(widget, i // 2, i % 2)
            mapper = QtWidgets.QDataWidgetMapper(self)
            mapper.setModel(self.items_model)

            mapper.addMapping(name_label, 0, b"text")
            mapper.addMapping(age_spinbox, 1, b"value")

            self._mapper_widgets.append((widget, mapper))

        lay = QtWidgets.QVBoxLayout(self)
        lay.addWidget(top_widget, alignment=QtCore.Qt.AlignTop)
        lay.addWidget(items_widget, stretch=1, alignment=QtCore.Qt.AlignTop)
        lay.addWidget(bottom_widget, alignment=QtCore.Qt.AlignBottom)

        self._update_page(0)

    def set_data(self, data):
        self.items_model.clear()
        for values in data:
            items = []
            for value in values:
                item = QtGui.QStandardItem()
                item.setData(value, QtCore.Qt.DisplayRole)
                items.append(item)
            self.items_model.appendRow(items)
        self.current_page = 0
        self.page_spinbox.setMaximum(max(0, self.number_of_pages - 1))

    @property
    def number_of_pages(self):
        return math.ceil(self.items_model.rowCount() / len(self._mapper_widgets))

    def is_page_valid(self, page):
        return 0 <= page < self.number_of_pages

    def get_current_page(self):
        return self._current_page

    @QtCore.pyqtSlot(int)
    def set_current_page(self, page):
        if self.is_page_valid(page):
            self._update_page(page)
            self._current_page = page
            self.page_spinbox.setValue(page)

    current_page = QtCore.pyqtProperty(
        int, fget=get_current_page, fset=set_current_page
    )

    def next_page(self):
        self.current_page += 1

    def previous_page(self):
        self.current_page -= 1

    def _update_page(self, page):
        items_per_page = len(self._mapper_widgets)
        start_index = page * items_per_page
        end_index = min((page + 1) * items_per_page, self.items_model.rowCount())
        indexes = list(range(start_index, end_index))
        for i, (widget, mapper) in enumerate(self._mapper_widgets):
            if i < len(indexes):
                widget.show()
                mapper.setCurrentIndex(indexes[i])
            else:
                widget.hide()

        self.previous_button.setEnabled(page > 0)
        self.next_button.setEnabled(page < (self.number_of_pages - 1))

    @QtCore.pyqtSlot(str)
    def search(self, text):
        match_items = self.items_model.findItems(
            text, flags=QtCore.Qt.MatchStartsWith, column=0
        )
        if match_items:
            first_match_item, *_ = match_items

            name = first_match_item.data(QtCore.Qt.DisplayRole)
            print(name)

            row = first_match_item.row()
            page = row // len(self._mapper_widgets)
            self.current_page = page

    def to_list(self):
        data = []
        for i in range(self.items_model.rowCount()):
            name = self.items_model.item(i, 0).data(QtCore.Qt.DisplayRole)
            age = self.items_model.item(i, 1).data(QtCore.Qt.DisplayRole)
            data.append((name, age))
        return data


class MainWindow(QtWidgets.QMainWindow):
    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)

        self.page_widget = PageWidget()
        self.page_widget.openClicked.connect(self.on_open_clicked)
        self.page_widget.saveClicked.connect(self.on_save_clicked)

        self.setCentralWidget(self.page_widget)

        self.resize(320, 360)

    @QtCore.pyqtSlot()
    def on_open_clicked(self):
        items = [
            ("Bob", 51),
            ("Randy", 32),
            ("Dakota", 22),
            ("Steven", 19),
            ("Clarke", 40),
            ("Niomi", 27),
            ("David", 19),
            ("Nathan", 45),
            ("James", 1),
            ("Joe", 2),
            ("Jacob", 3),
            ("Jonah", 4),
            ("Jerome", 5),
            ("Jack", 6),
            ("Jamie", 7),
            ("Jackson", 8),
            ("Jamie", 9),
        ]
        self.page_widget.set_data(items)

    @QtCore.pyqtSlot()
    def on_save_clicked(self):
        items = self.page_widget.to_list()
        print(items)


if __name__ == "__main__":
    import sys

    app = QtWidgets.QApplication(sys.argv)
    w = MainWindow()
    w.show()
    sys.exit(app.exec_())

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