def myintersection():
A=[]
B=[]
C=[]
for i in range (0, len(A)) :
if A[i] in B:
C+=A[i]
return(C)
A=[1,2,3,4,5]
B=[5,6,7]
C=myintersection()
print(C)
def myintersection():
A=[]
B=[]
C=[]
for i in range (0, len(A)) :
if A[i] in B:
C+=A[i]
return(C)
A=[1,2,3,4,5]
B=[5,6,7]
C=myintersection()
print(C)