Show key and value from a dictionary in reportlab python

I am using reportlab to generate pdf. I have this function in django rest framework, in which I have a dictionary called data, I am doing a for to go through that data and show its key and value in the pdf, for this I do this:

@api_view()
def hello_world(request):
  
   todos =
[
   {
      primer_apellido : Castro,
      segundo_apellido : Mendieta,
      primer_nombre : José,
      segundo_nombre : Raúl,
      genero : masculino,
      lugar_de_nacimiento : Cuenca - Azuay,
      fecha_de_nacimiento : 1967-10-20,
      provincia : Loja,
      canton : Cuenca,
      ciudad : Loja,
      parroquia : El Vecino,
      direccion : Turunuma Alto. Urb. Elite. Casa A1.,
      telefono_institucion : 13213213,
      email_principal : [email protected]
   }
]
 
    buffer = io.BytesIO()

    # Create the PDF object, using the buffer as its "file."
    p = canvas.Canvas(buffer)

    # # Draw things on the PDF. Here's where the PDF generation happens.
    # # See the ReportLab documentation for the full list of functionality.

    from reportlab.lib import colors 
    from reportlab.lib.units import inch 
    y = x = 0
    dy = inch*3/4.0
    dx = inch*5.5/5
    w = h = dy/2
    rdx = (dx-w)/2    
    rdy = h/5.0
    texty = h+2*rdy    
    for todo in todos:
        p.drawString(x+dx/2, y+texty, todo, todos[todo])        
        x = x+dx    
        y = y + dy
        x = 0
    
    # Close the PDF object cleanly, and we're done.
    p.showPage()
    p.save()

    # FileResponse sets the Content-Disposition header so that browsers
    # present the option to save the file.
    buffer.seek(0)

    return FileResponse(buffer, as_attachment=True, filename='hello.pdf')

I use the drawStringreportlab function, but it only lets me do this p.drawString(x+dx/2, y+texty, todo)so I can display only the key and not the key and value. How can I make the key and the value be displayed or if there is any other reportlab function to be able to do it. I hope you can help me. Thanks in advance