Combine dictionary and fasta heading

Mergeheadings

data_file = open("sampleData.txt")
result_file = open ("result.txt","w")
        for line in data_file:
                if "abc" in line: 
                        key=line.split(' ')[0]
                        key=key.split('>')[1]
                        for line2 in open("dictionary.txt"):
                                if key in line2:
                                        result_file.write(">"+line2)
                else:
                        print line.strip('\n')
result_file.write(line)