[reportlab-users] ValueError: redefining named object

[Robin Becker]

jo wrote:

> 

> I see the line that cause this error is this one:

>        self.ss['tx'].setFont('OCR', 10)

> 

> seems reportlab can performs setFont() only the first time but this happen

> only when the font is defined by user.

> I wonder if  there's a workaround to avoid this error.

> 

>   def  display(self):

>        self.ss['tx'] = self.ss['cnvs'].beginText()

>        self.ss['eli'] = self.ss['cnvs'].beginPath()

>        

>        self.ss['tx'].setHorizScale(100)

>        self.ss['tx'].setTextOrigin(0,0)

>        self.ss['tx'].moveCursor(

>                (self.ss['borderx'] + (self.ss['pxriga'] * 31)),

>                (self.ss['bordery'] + (self.ss['pxriga'] * 1))

>                )

>        self.ss['tx'].textOut("printing...")

>        self.ss['cnvs'].drawText(self.ss['tx'])

>        self.ss['cnvs'].showPage()

>        self.ss['cnvs'].save()

> 

> jo

.......
try:
     self.ss['tx'].setFont('OCR', 10)
except:
     pass

or better

def startup(self):
    # do things required only once
    self.ss['tx'].setFont('OCR', 10)

-- 
Robin Becker