what does this error code mean?

[fc2008]

Heya im getting this error, im trying to make it so when the left mouse button is pressed an event occurs,

but i Keep getting the following error:

if info.valid and info.object == female:
UnboundLocalError: local variable 'info' referenced before assignment

any thoughts? the code is below:

import viz

import vizinfo
viz.go()

ground = viz.add('tut_ground.wrl')
avatar = viz.add('vcc_male.cfg')
female = viz.add('vcc_female.cfg')

viz.translate(viz.HEAD_POS,0,20,-30)
viz.lookat(0,0,0)
viz.mouse(viz.OFF)
viz.clearcolor(0.5,0.5,1)


#Add the vizinfo object with a message.
infoObject = vizinfo.add('Give me feedback!')
infoObject.visible(0)
#Give it a title.
infoObject.title('Vizinfo box')
#Add GUI elements with labels.
button = infoObject.add(viz.BUTTON, 'Push me')
slider = infoObject.add(viz.SLIDER, 'Slide me')
check = infoObject.add(viz.CHECKBOX, 'Check me')
#Adjust the parameters of one of the GUI elements.
slider.vertical() 

def mouse(button): 
		if button == viz.MOUSEBUTTON_LEFT:
			info = viz.pick(1)
			if info.valid and info.object == ground:
				walk = vizact.walkTo([info.point[0],0,info.point[2]])
				avatar.runAction(walk)
			
		if info.valid and info.object == female:
				infoObject.visible(1)
	
viz.callback(viz.MOUSEDOWN_EVENT,mouse)

thankyou for your time