# open file for writing f = open('dnafile.txt', 'w') # prepare the file with some test data for x in range(1, 10): f.write("Name {0}\n".format(x)) f.write("Sequence {0} GTCAGTCAGTCA\n".format(x)) # close the file f.close() # This is the main good part: # open the file for reading f = open("dnafile.txt", 'r') # create a dictionary to store the values dna = dict() # prime the pump by loading the first line line = f.readline() # loop if line has a value while line: # create a dict with the first line as a key and the next line as the value # strip() removes the newline from the end of each string dna[line.strip()] = f.readline().strip() # ready the next line for the line = f.readline() # close the file f.close() # loop through all of the sequences for seq in dna: print "{0} is {1}".format(seq, dna[seq]) # print a specific sequence print "The sequence with name 'Name 9' is {0}".format(dna["Name 9"]);
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