Develop Reference

How to a convert a listbox item's name to a label in Python

For the program that I am required to write up, I need the name of a Listbox item to also be the text in the label. This is the code that I thought would work, but it only configurated the label to be the item's number in the Listbox, not the name:
def openAccount(self):
selectedItem = ltboxSrcUser.curselection()
for item in selectedItem:
rootMainPage.withdraw()
rootOthAccPage.deiconify()
lblOtherUserName.config(text = ltboxSrcUser.curselection())
Can anybody help me out?

The documentation for the listbox shows that curselection returns the index of the selected items, not the values. To get the values you must pass the index to the get method.
def openAccount(self):
selectedItems = ltboxSrcUser.curselection()
if selectedItems:
rootMainPage.withdraw()
rootOthAccPage.deiconify()
index = selectedItems[0]
item = ltboxSrcUser.get(index)
lblOtherUserName.config(text=item)

Remove item from QListView\QListWidget by string name

In PyQt4, How do I delete an item from the QListView\QListWidget by a name string?
def deleteItem(itemName):
item = dialog.listWidget.indexFromItem(itemName)
dialog.listWidget.takeItem(item)
This is what I've got so far, and obviously feeding string to indexFromItem is not working...

First, look for the item in listWidget using findItems:
items_list = dialog.listWidget.findItems(itemName,Qt.MatchExactly)
This will return a list of matched QListWidgetItem with itemName (which should be a list of one item if there is only one item with itemName)
Second, call dialog.listWidget.row() to find row number of your found item(s).
Finally, detele that/those item(s) using dialog.listWidget.takeItem()
So at the end you function would look like this:
def deleteItem(itemName):
items_list = dialog.listWidget.findItems(itemName,QtCore.Qt.MatchExactly)
for item in items_list:
r = dialog.listWidget.row(item)
dialog.listWidget.takeItem(r)
Again, you have to make sure there are no items with same names otherwise they would be deleted all together.

Retrieve text from entry widget Tkinter

So I know how to retrieve the text from a single entry widget using the get function but now I am trying to create multiple entry widgets at the same time using a for loop. How can I go back and retrieve the text from anyone of the entry widgets once the user types in them?
rows=11
for line in range(10):
rows=rows+1
widget = Tk.Entry(self.frame)
widget.grid(row=rows, column=5)

The problem is that all of your widget objects are being assigned to a reference, and with each next iteration of the loop are being unreferenced. A way to fix this is to create a list and add these widgets to the list:
entries = []
for line in range(10):
rows = rows + 1
widget = Tk.Entry(self.name)
widget.grid(row = rows, column = 5)
entries.append(widget) # Add this line to your code
Now, to access a specific entrybox, you just find it in the array. So, for example, the second box will be found at entries[1] (because it is 0-based).

The fundamental problem you're having is that you don't have any sort of data structure. Are you familiar with the list type?
rows=11
entries = [Tk.Entry(self.frame) for item in range(10)]
for item in entries:
rows=rows+1
item.grid(row=row, column=5)
This creates a list of Entry widgets, then goes through that list and grids each one into a row (starting with 12). You can access list items by index, e.g. entries[0] for the first Entry.

widgets = []
for i in range(11, 23):
widgets.append(Tk.Entry(self.frame))
widget[i-11].grid(row = i, column = 5)

To answer your question directly, you need the get() method, which is available to the Entry class. To get the value of your widget object, the code would look something like this:
myValue = widget.get()
Please note that, as others have mentioned, your "for" loop does not actually create 10 Entry objects. Since you keep reassigning your new Entry objects to the variable "widget", the old Entry object you created gets de-referenced. Instead of assigning each new Entry object to the variable "widget", append them to a list instead.

How to display a QListWidget Item

I am running the below code:
self.myList = QListWidget()
for i in range(3):
self.Item = QListWidgetItem()
self.name = 'A'+'%04d'% i
self.Item.setText(self.name)
self.myList.addItem(self.Item)
print self.myList.selectedItems()
it prints an empty list:
[]
Please suggest where I am missing.

According to QT docs (i've used c++ ones, but it's ok for python bridge as well),
QList<QListWidgetItem *> QListWidget::selectedItems () const
Returns a list of all selected items in the list widget.
This means, that print self.myList.selectedItems() will output all the list of items user was selected, not all the items are in widget.
You can try to use count() to get number of items and item(number) to get one.

Python Query Result in QTreeWidget

I am working on python plugins.I used PyQt4 Designer.
I want to list query result into QTreeWidget.
My code is as follows:
c = self.db.con.cursor()
self.db._exec_sql(c, "select est from bio")
for row in c.fetchall():
item_value=unicode(row[0])
top_node1 = QTreeWidgetItem(item_value)
self.treeWidget.insertTopLevelItem(0, top_node1)
The query returns the values as:
But when i list these values into QTreeWidget using above code,it is shown as below :
Only first character is shown.If i change '0' to some other number in self.treeWidget.insertTopLevelItem(0, top_node1) ,nothing appears in QTreeWidget.
How do i do it????
thanx.

If you take a look at the documentation for a QTreeWidgetItem, you will see there are a number of possible constructors for creating an instance. Though none of which it seems you are using in a way that is going to give you desirable results. The closest match to the signature you are providing is:
QTreeWidgetItem ( const QStringList & strings, int type = Type )
What this is probably doing is taking your string (I am assuming row[0] is a string because I don't know which drivers you are using) and applying it as a sequence, which would fullfill the requiremets of QStringList. Thus what you are getting is populating multiple columns of your item with each letter of your string value. If this is what you wanted, then you would n eed to tell your widget to show more columns: self.treeWidget.setColumnCount(10). But this isn't what you are looking for I am sure.
More likely what you should be trying is to create a new item, then add the value to the desired column:
item = QTreeWidgetItem()
item.setText(0, unicode(row[0]))
self.treeWidget.insertTopLevelItem(0, item)
You can use the default constructor with no arguments, set the text value of the first column to your database record field value, and then add that item to the tree. You could also build up a list of the items and add them at once:
items = []
for row in c.fetchall():
item = QTreeWidgetItem()
item.setText(0, unicode(row[0]))
items.append(item)
self.treeWidget.insertTopLevelItems(0, items)

Your first aproach could be corrected just add a list to the widgetitem not a string like this:
top_node1 = QTreeWidgetItem([item_value])