Insert csv data rows into a tree widget

[LMP2016]

I'm a beginner so dont beat me up too much :) .I have a program where a user enters a product number into a field and clicks a search button, the program then opens a csv file (see below), looks for that product number and should then only display (by inserting that data into a treeview) the data relevant, stopping once blank rows occur - this indicates the end of the part information and the start next part.

Example of the csv is below (excuse the use of the error box)

Error:
Product	           PartDesc	      Drawings	   Issues	       Documents
1-1841111-2	    bad feeling	   Dwg1	      Iss A	    c:\company\docs\tfpp\widget1.xls
		                       Dwg2	      Iss B	    c:\company\docs\tfpp\bob.pdf
		                       Dwg25	  Iss Z	    c:\company\docs\tfpp\itsatrap.pdf
						
1-1841111-4	    tribble	       Dwg3	      Iss C	    c:\company\docs\tfpp\wibble.xls
				
1-1841111-5	    nothing	       Dwg4	      Iss D	    c:\company\docs\tfpp\rocket.pdf
		                       Dwg5	      Iss E	    c:\company\docs\tfpp\dwg1.doc

Unfortunately when I run the code I can only get a single csv row to display and have not been able to work out how get subsequent rows, stopping at a blank row. I am however, not convinced that the below code although its displays a single line as expected is operating correctly.

def search(self):
        if self.SOentry.get() != "":
            x = self.dwgtree.get_children()
            for item in x:
                self.dwgtree.delete(item)
            self.partdesc.delete(0,'end')
                
            with open("c:\python\projects\somedwgs.csv") as csvfile:
                    reader = csv.DictReader(csvfile)
                    for row in reader:
                        result=(row['Product'])
                        if self.SOentry.get() == result:
                                descr=(row['PartDesc'])
                                descDwg=(row['Drawings'])
                                descIss=(row['Issues'])
                                descDscr=(row['Documents'])
                                self.partdesc.insert(0,descr)
                                while True:
                                    #if row['PartDesc'] != "":
                                    if descDwg != "":
                                        self.dwgtree.insert("",'end',values=(descDwg,descIss,descDscr))
                                        next(reader)
                                        break