我和Kivy一起工作了几个星期的Python应用程序（我第一次真正深入Python）并且使用链接到kv Label文本的ListProperty（）项目遇到了麻烦。
正在创建列表，并使用.kv文件中的root.var [indx]填充Label文本。我的问题在于更新ListProperty中的特定索引点。我有一个功能，它每次都有效。然后另一个总是错误：
TypeError：'kivy.properties.ListProperty'对象不支持项目分配
我的部分代码：
from kivy.properties import StringProperty, ObjectProperty, ListProperty, NumericProperty
import... #continued
class setScreen(screen):
#other variables here
trig0 = ['tr0', 'Pre-Mass', 'yuo', '4', 1, colNorm, 'trig0p']
...
trigIndex = {}
trigList = [trig0, ...]
trigDict = {'trig0p':trig0p, ...}
trig0p = ListProperty(trig0[:])
...
def __init__(self, **kwargs):
#do init here
def custController(self):
#this screen's main functions
#The following function works and the Kivy Label text is updated without issue
def changeProcess(self, x): #x is list from custController button eg.['trig0p', 'Text', 'New Text', 'more new text', #, 'something']
itemToChange = x[0]
self.trigDict[itemToChange][2] = x[2]
self.trigDict[itemToChange][3] = x[3]
#The following function is for a remote update from a different class
#This fails with a 'TypeError:'
def progUpdate(self, y): #y again is a list
itemToChange = y[0]
self.trigDict[itemToChange][2] = y[2]
self.trigDict[itemToChange][3] = y[3]
class ...other screens and manager
#The following Popup is called from a button in the main functions
class MassSetPopup(Popup):
settingID = ''
settingPart = StringProperty()
settingLoc = StringProperty()
settingNum = StringProperty()
full_num = ''
new_lineData = []
def __init__(self, **kwargs):
super(MassSetPopup, self).__init__(**kwargs)
def on_parent(self, *args):
self.settingPart = self.new_lineData[1]
self.settingLoc = self.new_lineData[2]
self.settingNum = self.new_lineData[3]
def num_clk(self, x):
if x == 'Bksp':
self.full_num = self.full_num[:-1]
self.settingNum = self.full_num
self.new_lineData[3] = self.full_num
elif len(x) > 3:
self.settingLoc = x
self.new_lineData[2] = x
elif len(self.full_num) == 4:
pass
else:
self.full_num = self.full_num+x
self.settingNum = self.full_num
self.new_lineData[3] = self.full_num
def save_point(self):
setScreen.progUpdate(setScreen, self.new_lineData)
self.dismiss()
def cancel_point(self):
print(self.new_lineData)
self.dismiss()
我已将返回的数据放在setScreen类的非ListProperty列表中作为测试，并且它正在从Popup类中正确更新。
所有.kv小部件都正确加载，屏幕/弹出窗口按预期执行。
我一直在努力解决这个问题，并且已经找到了一个低点，但找不到任何适合这个问题的东西，或者甚至指出了我正确的方向，至少对我的新手Python编码。