How to populate a dataframe in a QDialog using PyQT

[Piyush]

@jsulm I am getting empty/none table. Here is the code snippet:

def Dialog(self):
     table = self.MyTable(data,5,3)
     table.show()
     self.table = table
         
def MyTable(self,data,*args):
     self.data = data
     self.tableWidget = QTableWidget()
     horHeaders = []
     for n, key in enumerate(sorted(self.data.keys())):
        horHeaders.append(key)
        for m, item in enumerate(self.data[key]):
            newitem = QTableWidgetItem(item)
            self.tableWidget.setItem(m, n, newitem)
            self.tableWidget.setHorizontalHeaderLabels(horHeaders)

[jsulm]

@Piyush said in How to populate a dataframe in a QDialog using PyQT:

Exactly, I want a QDialog and then put a table on it.

So, did you create a table in your dialog? It is really hard to follow you as you do not provide much information.

[jsulm]

@Piyush You're not creating any rows/columns.
See http://doc.qt.io/qt-5/qtablewidget.html

tableWidget = new QTableWidget(this);
tableWidget->setRowCount(10);
tableWidget->setColumnCount(5);

[JonB]

@Piyush

OK, so I don't know what all the earlier discussion was about, but a QTableWidget is simply a QWidget like any other widget, and I presume you know how to add widgets to dialogs.

Your code will look like:

dlg = QDialog()
tbl = QTableWidget()
dlg.addWidget(tbl)
tbl.setHorizontalHeaderLabels(...)
tbl.setRowCount(...)
tbl.setColumnCount(...)
...
item = QTableWidgetItem(...)
tbl.setItem(m, n, item)

If you want to create a dedicated dialog for this, you might go:

class MyDialog(QDialog):
    def __init__(self, parent=None):
        super().__init__(parent)

        self.tbl = QTableWidget()
        self.addWidget(self.tbl)
        self.tbl.setHorizontalHeaderLabels(...)
        self.tbl.setRowCount(...)
        self.tbl.setColumnCount(...)
        ...
        item = QTableWidgetItem(...)
        self.tbl.setItem(m, n, item)

That's the skeleton outline. As @jsulm says, you need to create the actual rows/columns in the table (tbl.setRow/ColumnCount()) to hold the QTableWidgetItems you create.