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Define function to intersect Strings and lists

def intersect(seq1, seq2):     res = []                     # start empty     for x in seq1:               # scan seq1         if x in seq2:            # common item?             res.append(x)        # add to end     return res s1 = "SPAM" s2 = "SCAM" print intersect(s1, s2)                   # strings s1 = [1,2,3,4,5] s2 = [3,4,5,6,7] print intersect(s1, s2)                   # list