it has purple and yellow flowers.
Can someone please help us identify this?

(Grin) You have Solanum dulcamara, climbing nightshade. It is a very common
weed. Go ahead and grow one if you think it's pretty. However, be aware that it
is somewhat invasive, and it produces poisonous red berries.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)