def pass_ref(list1):
 list1.extend([23,89])
 print ("list inside the function: ",list1)
 
list1 = [12,67,90]
print ("list before pass", list1)
pass_ref(list1)
print ("list outside the function", list1)


#  JAreina

print(" \npor valor :::::::::::::::::::: \n")

def func(a):
 a=a+4
# a es reasignada 
 print ("Inside the function", a)

a= 10
func(a)
print ("Outside the function", a)

#  JAreina