有沒有辦法使QTreeWidget鏡像對內部數據結構（如字典）所做的更改進行映射？看起來他們會在api中創建這個功能，因爲有很多程序可能與多個GUI區域中的QTreeWidget相互作用，但QTreeWidget要求的主要目的是在任何時間點顯示數據結構。 QtGui項目的文檔對我來說並不那麼簡單，因爲它通常是指C文檔，我不確定它是如何轉換爲python的。QTreeWidget鏡像python字典
所以基本上我最喜歡的是使QTreeWidget顯示嵌套字典的最簡單的方式，其中頂級對應於鍵，子級對應於值。此外，如果值是字典，請使用該級別中的鍵併爲值設置子級別等。
這很容易實現嗎？我一直無法找到任何東西來做這樣的簡單鏡像數據結構。
這是一個簡單的實現：
def fill_item(item, value):
item.setExpanded(True)
if type(value) is dict:
for key, val in sorted(value.iteritems()):
child = QTreeWidgetItem()
child.setText(0, unicode(key))
item.addChild(child)
fill_item(child, val)
elif type(value) is list:
for val in value:
child = QTreeWidgetItem()
item.addChild(child)
if type(val) is dict:
child.setText(0, '[dict]')
fill_item(child, val)
elif type(val) is list:
child.setText(0, '[list]')
fill_item(child, val)
else:
child.setText(0, unicode(val))
child.setExpanded(True)
else:
child = QTreeWidgetItem()
child.setText(0, unicode(value))
item.addChild(child)
def fill_widget(widget, value):
widget.clear()
fill_item(widget.invisibleRootItem(), value)
我添加列表支持，以防萬一有人需要它。
用法：
d = { 'key1': 'value1',
'key2': 'value2',
'key3': [1,2,3, { 1: 3, 7 : 9}],
'key4': object(),
'key5': { 'another key1' : 'another value1',
'another key2' : 'another value2'} }
widget = QTreeWidget()
fill_widget(widget, d)
widget.show()
結果：
這絕對是太棒了！非常感謝。每次調用一個按鈕來調用某個改變字典的函數時，這真是太棒了。我最終在每個調用改變數據結構的按鈕的函數調用中調用'treeWidget.clear（）''fill_item'和'treeWidget.show（）'之前。 – chase
爲了方便，我在代碼中加了'fill_widget'函數。 –
只是因爲我最近需要這個實施Python3和PyQt5這裏是給定的例子的略短（和完整）端口：
from PyQt5.QtWidgets import QApplication, QTreeWidget, QTreeWidgetItem
class ViewTree(QTreeWidget):
def __init__(self, value):
super().__init__()
def fill_item(item, value):
def new_item(parent, text, val=None):
child = QTreeWidgetItem([text])
fill_item(child, val)
parent.addChild(child)
child.setExpanded(True)
if value is None: return
elif isinstance(value, dict):
for key, val in sorted(value.items()):
new_item(item, str(key), val)
elif isinstance(value, (list, tuple)):
for val in value:
text = (str(val) if not isinstance(val, (dict, list, tuple))
else '[%s]' % type(val).__name__)
new_item(item, text, val)
else:
new_item(item, str(value))
fill_item(self.invisibleRootItem(), value)
if __name__ == '__main__':
app = QApplication([])
window = ViewTree({ 'key1': 'value1', 'key3': [1,2,3, { 1: 3, 7 : 9}]})
window.show()
app.exec_()
我發現遞歸m在製作巨大目錄結構的樹結構時，它的速度非常慢。下面的方法可能會有幫助。
def update_right_dock(self, file_list):
obj_list = []
maps = []
level = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14] #Stores Maximum and Current Levels For The TreeWidget
level_name = ["", "", "", "", "", "", "", "", "", "", "", "", "", ""] #Stores Previous File Path To Compare before adding file or folder to tree
tree.clear()
prev = ""
tot_len = 2
p = 0
for file in file_list:
if(os.path.isdir(file)):
is_file = 0
else:
is_file = 1
tmp_map = []
file = file[1:]
abs_path = file.split('/')
abs_path_len = len(abs_path)
filename = abs_path[-1]
if(prev == file[:tot_len - 1]):
#print("LOOOOOOOOOOOOP ------ 1")
while (i < abs_path_len - 1):
level[level_counter + 1] = QTreeWidgetItem(level[level_counter], [abs_path[i]])
tmp_map.append(level[level_counter + 1])
tmp_map.append(level_counter + 1)
tmp_map.append(1)
obj_list.append(tmp_map)
tmp_map = []
level[level_counter + 1].setCheckState(0, Qt.Checked)
tree.expandItem(level[level_counter + 1])
level_counter = level_counter + 1
level_name[i] = abs_path[i]
i = i + 1
level[level_counter + 1] = QTreeWidgetItem(level[level_counter], [abs_path[i]])
tmp_map.append(level[level_counter + 1])
tmp_map.append(level_counter + 1)
tmp_map.append(0)
obj_list.append(tmp_map)
tmp_map = []
level[level_counter + 1].setCheckState(0, Qt.Checked)
tree.expandItem(level[level_counter + 1])
file_len = len(filename)
tot_len = len(file) - file_len
prev = file[:tot_len - 1]
continue
len2 = len(level_name)
k = 0
while k < abs_path_len and k < len2:
if (level_name[k] == abs_path[k]):
k = k + 1
continue
break
level_counter = k + 1
i = level_counter - 1
while k < abs_path_len:
level_name[k] = abs_path[k]
k = k + 1
if level_counter > 1:
#print("LOOOOOOOOOOOOP ------ 2")
if(i == abs_path_len - 1):
level_counter = level_counter - 1
while i < abs_path_len - 1:
level[level_counter] = QTreeWidgetItem(level[level_counter - 1], [abs_path[i]])
tmp_map.append(level[level_counter])
tmp_map.append(level_counter)
tmp_map.append(1)
obj_list.append(tmp_map)
tmp_map = []
level[level_counter].setCheckState(0, Qt.Checked)
tree.expandItem(level[level_counter])
level_counter = level_counter + 1
level_name[i] = abs_path[i]
i = i + 1
if i == abs_path_len - 1:
level_counter = level_counter - 1
level[level_counter + 1] = QTreeWidgetItem(level[level_counter], [abs_path[i]])
tmp_map.append(level[level_counter + 1])
tmp_map.append(level_counter + 1)
tmp_map.append(0)
obj_list.append(tmp_map)
tmp_map = []
level[level_counter + 1].setCheckState(0, Qt.Checked)
tree.expandItem(level[level_counter + 1])
file_len = len(filename)
tot_len = len(file) - file_len
prev = file[:tot_len - 1]
continue
if(abs_path_len == 1):
level[level_counter + 1] = QTreeWidgetItem(tree, [abs_path[i]])
tmp_map.append(level[level_counter + 1])
tmp_map.append(level_counter + 1)
tmp_map.append(0)
obj_list.append(tmp_map)
tmp_map = []
level[level_counter + 1].setCheckState(0, Qt.Checked)
tree.expandItem(level[level_counter + 1])
continue
i = 1
#print("LOOOOOOOOOOOOP ------ 3")
level[level_counter] = QTreeWidgetItem(tree, [abs_path[0]])
tmp_map.append(level[level_counter])
tmp_map.append(level_counter)
tmp_map.append(1)
obj_list.append(tmp_map)
tmp_map = []
level[level_counter].setCheckState(0, Qt.Checked)
tree.expandItem(level[level_counter])
level_name[level_counter - 1] = abs_path[0]
while i < abs_path_len - 1:
level[level_counter + 1] = QTreeWidgetItem(level[level_counter], [abs_path[i]])
tmp_map.append(level[level_counter + 1])
tmp_map.append(level_counter + 1)
tmp_map.append(1)
obj_list.append(tmp_map)
tmp_map = []
level[level_counter + 1].setCheckState(0, Qt.Checked)
tree.expandItem(level[level_counter + 1])
level_counter = level_counter + 1
level_name[i] = abs_path[i]
if i == abs_path_len - 1:
level_counter = level_counter - 1
i = i + 1
level[level_counter + 1] = QTreeWidgetItem(level[level_counter], [abs_path[i]])
tmp_map.append(level[level_counter + 1])
tmp_map.append(level_counter + 1)
tmp_map.append(0)
obj_list.append(tmp_map)
tmp_map = []
level[level_counter + 1].setCheckState(0, Qt.Checked)
tree.expandItem(level[level_counter + 1])
level_name[i] = abs_path[i]
file_len = len(filename)
tot_len = len(file) - file_len
prev = file[:tot_len - 1]
p = p + 1
[這]（http://stackoverflow.com/questions/15178807/python-pyside-using-a-custom-widget-in-a-qtreewidget）問題看起來相似，但僅提供了一種通用方法，沒有可悲的代碼。但它可能會幫助你 – M4rtini
雖然你可以用'QTreeWidget'來做到這一點，你真的應該使用由模型支持的'QTreeView'。否則，您將不斷需要重新填充整個樹來反映更改。 –