[reportlab-users] can't draw more then one line on a canvas

[andy at reportlab.com]

First of all, your second line is starting and finishing in the same 
place.

    c.line(6*cm, 12.7*cm, 6*cm, >12.7*cm)

Secondly, I think canvas.lines(*) is supposed to accept a list of 
coordinate tuples,
not of line methods.  You've been doing too much functional programming 
:-)
Your call is saying this:
c.lines(<call method line of canvas object>, <call method line of 
canvas object>)

It should be saying something like this:
c.lines(
    (6*cm, 14.7*cm, 10*cm, 14.7*cm),
    (6*cm, 12.7*cm, 6*cm, 12.7*cm)
)

Hope this helps,

Andy Robinson