从PyQt5中的QListWidget删除项目

问题描述

我正在尝试在pyqt5中创建一个刷新按钮。我正在构建一个桌面应用程序。我编写了扫描特定文件夹并将文件名及其路径保存为数组的代码。

I am trying to make a refresh button in pyqt5. I am building a desktop app. I wrote the code that scans particular folder and saves filenames and their paths as an array.

数组值作为项添加到QListWidget

Array values are added to QListWidget as items

self.sampleChoose_list.addItems(sample_directory[0])

我正在尝试创建一个刷新数组值并将其传递给QListWidget的函数。

I am trying to make a function that refreshes values of the array and passes it to QListWidget.

类似这样的事情

self.refreshSamples.clicked.connect(self.refreshSample)

def refreshSample(self):
    sample_directory = []
    sample_files = []
    for (dirpath, dirnames, filenames) in walk('./Samples'):
        filenames = [f for f in filenames if not f[0] == '.']
        sample_files.extend(filenames)
        break
    the_dir = "Samples"
    paths = [os.path.abspath(os.path.join(the_dir,filename)) for filename in os.listdir(the_dir) if not filename.startswith('.')]

    sample_directory.append(sample_files)
    sample_directory.append(paths)

    self.sampleChoose_list.addItems(sample_directory[0])

我遇到的问题是：当我按下刷新按钮时，会添加新项，但不会删除旧项。如何从QListWidget中删除项目？

The problem that I struggle with is: when I push refresh button, new items get added, but the old ones are not deleted. How to remove items from QListWidget?

推荐答案

使用 QListWidget.clear（）并且它

要获得更多选择性，您可以使用 QListWidget.takeItem（index），

for am more selective approuch you can use QListWidget.takeItem( index ), it

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