PyQt Open File Dialog error

Question

So, I have an application with a QTableWidget and want to import an .xls file:

def openfile(self):
        filename = QtGui.QFileDialog.getOpenFileName(self, 'Open File', '/home', ".xls(*.xls)")
        fname = open(filename)
        with fname:
            wb = xlrd.open_workbook(fname)
            wb.sheet_names()
            sh = wb.sheet_by_index(0)
            for col in sh.ncols:
                for i in col:
                    r = 0
                    c = 0
                    newItem = QtGui.QTableWidgetItem(i)
                    self.tableWidget.setItem(r, c, newItem)
                    r += 1
                r = 0
                c += 1

But, I get this error: TypeError: coercing to Unicode: need string or buffer, file found

What have I done wrong?

Update:

def openfile(self):
            filename = unicode(QtGui.QFileDialog.getOpenFileName(self, 'Open File', '', ".xls(*.xls)"))
            wb = xlrd.open_workbook(filename)
            wb.sheet_names()
            sh = wb.sheet_by_index(0)
            self.first = sh.col_values(0)
            self.r = 0
            self.add()

    def add(self):
        for i in self.first:
             str(i)
             newItem = QtGui.QTableWidgetItem(i)
             self.tableWidget.setItem(self.r, 0, newItem)
             self.r += 1

It's working, but I can't load numbers... Only strings... Weird...

Update2:

def add(self):
        for i in self.first:
             newItem = QtGui.QTableWidgetItem(str(i))
             self.tableWidget.setItem(self.r, 0, newItem)
             self.r += 1

But it displays all numbers as floats....

Update3:

def add(self):
        for i in self.first:
             try:
                newItem = QtGui.QTableWidgetItem(str(int(i)))
             except ValueError:
                newItem = QtGui.QTableWidgetItem(str(i))    
             self.tableWidget.setItem(self.r, 0, newItem)
             self.r += 1

Problem solved...

Answer 1

xlrd.open_wookbook expects a filename (a string), not fname (a file object).

Try:

        filename = QtGui.QFileDialog.getOpenFileName(self, 'Open File', '/home', ".xls(*.xls)")
        wb = xlrd.open_workbook(filename)